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Posted: 2/12/2019 10:39:52 PM EDT
[#1]
Quote HistoryQuoted:
not specific to this thread, as there have been other low post count or new account holders asking for borderline things on this board - I think that there are many people here in the night vision community that want to share knowledge and other information out to others that are perceived to have an interest in 'restricted' or otherwise not civilian obtainable items. however, I want to remind everyone that not everyone that may be asking for this information may have a 'legitimate' reason for asking for, or using this information. there have been people in the past that have asked for things to skate itar, possibly get information on how to do currently illegal activities, etc. while some might have innocent reasons for asking for this information, there have been some seeking to catch the forum in promoting illegal activities, possibly do illegal transfers of technology, or distribute information that would cause problems in the wrong hands. without turning this into GD, be careful about answering questions, as there are leftist and others that frequent this forum too. I suppose you are one of those guys who wants the NFA to stay in place to because"MACHINEGUNS UR BAD!" Better ban those high capacity magazines too while we're at it...In fact maybe just turn in all our guns right? You support those gun bans do ya? Yeah, your elitist bullshit attitude rubs me right the fuck the wrong way. 
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Posted: 2/12/2019 10:42:37 PM EDT
[#2]
Quote HistoryQuoted:
In context, an opponent equipped with OOB technology has a similar advantage over a Gen3 user, that a Gen3 user has over an opponent with no night vision equipment at all. It's possible, in tactical situations that regularly occur, to gain a 100% assymetric advantage over a Gen3 ( or A Gen2 ) equipped opponent. Or, if you wanted to look at it another way, The Gen3 equipment wouldn't be any more useful than having a flashlight. But I have to stress that this statement is made in a specific context that occurs in the field. In other situations, it's a tactical aid that allows the user to avoid detection, or to enhance operations without giving their position away. The easiest way I can describe it without specifics - Imagine if the US was the only country that had Thermal and Gen3 and everyone else had Gen3... It's not a perfect solution in every situation, but at times, the conflict would be entirely asymmetric. David. 
Thats a pretty powerful force multiplier right there. |
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Posted: 2/12/2019 11:24:05 PM EDT
[#3]
Quote HistoryQuoted:
Maybe you should find another forum and go play Nanny mother elsewhere? I suppose you are one of those guys who wants the NFA to stay in place to because"MACHINEGUNS UR BAD!" Better ban those high capacity magazines too while we're at it...In fact maybe just turn in all our guns right? You support those gun bans do ya? Yeah, your elitist bullshit attitude rubs me right the fuck the wrong way. and you should leave your gd attitude in gd. |
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Posted: 2/12/2019 11:46:54 PM EDT
[#4]
Quote HistoryQuoted: Curious which one of your employees you or Alex are former DTNVG employee? Just trying to keep it straight. 
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Posted: 2/12/2019 11:50:01 PM EDT
[#5]
Quote HistoryQuoted:
Are you talking about Actinblack SARL or Actinwhite SARL? Two very different companies Quote HistoryQuoted:
Quoted: Curious which one of your employees you or Alex are former DTNVG employee? Just trying to keep it straight. |
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Posted: 2/13/2019 12:13:55 AM EDT
[#6]
Quote HistoryQuoted:
not elitist at all, just reminding people that there are people that might come to this forum, that do not have good intentions with their questions or with their comments. and you should leave your gd attitude in gd. EDIT: Hey the good news is you are the first person to make my ignore list, so shouldnt be a problem going forward. You can play policeman all you want and I wont see it.
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Posted: 2/13/2019 12:38:11 AM EDT
[#7]
Quote HistoryQuoted: Sorry, meant to say... ActinBlack.
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Posted: 2/13/2019 11:03:27 AM EDT
[#8]
Quote HistoryQuoted:
You guys need to watch spectral on Netflix. Right inline with this thread lol out of band is cool and all but what about different states of matter like Bose-Einstein condensate? Lol beyond that I just want class 3b stuff to be cash and carry And then when I read about what they are, and I was thinking, Seriously? So they hook them up they way they do and then choose such a stupid material to make them from, and how in the heck are these things supposed to exist? Oh, they've been 3D printed. Of course. Yeah, I'll just whip a few out of my Tiertime while I wait... Sorry for the minor spoiler there, but as cool as the video looks, it really mangles physics very quickly. Why don't they just say they are made of unobtanium. I'm ranting aren't I. Shows that mangle physics are my pet peeve. David. |
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Posted: 2/13/2019 1:58:42 PM EDT
[#9]
Quote HistoryQuoted:
So I watched the trailer and it looked cool, then it looked stupid, then I read the Wikipedia entry on it, and Bose-Einstein-Condensate? Freezing people? Give me a break... There's things such as mass and energy to consider, and even the interaction with air would destroy the state instantly through raised temperature, I mean, these things would be as fragile as some of the egos on this forum. And then when I read about what they are, and I was thinking, Seriously? So they hook them up they way they do and then choose such a stupid material to make them from, and how in the heck are these things supposed to exist? Oh, they've been 3D printed. Of course. Yeah, I'll just whip a few out of my Tiertime while I wait... Sorry for the minor spoiler there, but as cool as the video looks, it really mangles physics very quickly. Why don't they just say they are made of unobtanium. I'm ranting aren't I. Shows that mangle physics are my pet peeve. David. Quote HistoryQuoted:
Quoted:
You guys need to watch spectral on Netflix. Right inline with this thread lol out of band is cool and all but what about different states of matter like Bose-Einstein condensate? Lol beyond that I just want class 3b stuff to be cash and carry And then when I read about what they are, and I was thinking, Seriously? So they hook them up they way they do and then choose such a stupid material to make them from, and how in the heck are these things supposed to exist? Oh, they've been 3D printed. Of course. Yeah, I'll just whip a few out of my Tiertime while I wait... Sorry for the minor spoiler there, but as cool as the video looks, it really mangles physics very quickly. Why don't they just say they are made of unobtanium. I'm ranting aren't I. Shows that mangle physics are my pet peeve. David. But yeah with that outlook you will not. Lol |
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Posted: 2/13/2019 2:06:08 PM EDT
[#10]
Quote HistoryQuoted:
So I watched the trailer and it looked cool, then it looked stupid, then I read the Wikipedia entry on it, and Bose-Einstein-Condensate? Freezing people? Give me a break... There's things such as mass and energy to consider, and even the interaction with air would destroy the state instantly through raised temperature, I mean, these things would be as fragile as some of the egos on this forum. And then when I read about what they are, and I was thinking, Seriously? So they hook them up they way they do and then choose such a stupid material to make them from, and how in the heck are these things supposed to exist? Oh, they've been 3D printed. Of course. Yeah, I'll just whip a few out of my Tiertime while I wait... Sorry for the minor spoiler there, but as cool as the video looks, it really mangles physics very quickly. Why don't they just say they are made of unobtanium. I'm ranting aren't I. Shows that mangle physics are my pet peeve. David. |
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Posted: 2/14/2019 12:17:50 AM EDT
[#11]
Quote HistoryQuoted:
You must be a hoot at the cinema |
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Posted: 2/14/2019 7:18:56 AM EDT
[#12]
Can 31a see oob?
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Posted: 2/14/2019 8:39:27 AM EDT
[#13]
I am so lost with all this out of band discussion. I have no clue to what it even is. Can someone explain please so I can learn a little to what you guys are talking about?
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Posted: 2/14/2019 9:47:56 AM EDT
[#14]
Quote HistoryQuoted:
That future is coming sooner than you think. Sionyx is already gen 2 competitive and they're saying that they can double the performance with a different lens. Quote HistoryQuoted:
Quoted:
Quoted:
Homebrew route is easiest. Before having an OOB laser or illuminator, having something that sees the OOB source is the first step. Th Sionyx camera is particularly good at it.  Sionyx is already gen 2 competitive and they're saying that they can double the performance with a different lens. |
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Posted: 2/14/2019 9:56:24 AM EDT
[#15]
Quote HistoryQuoted:
Not a gd attitude at all, if you want to act like an elitist prick prepared to be called on it. EDIT: Hey the good news is you are the first person to make my ignore list, so shouldnt be a problem going forward. You can play policeman all you want and I wont see it. Quote HistoryQuoted:
Quoted:
not elitist at all, just reminding people that there are people that might come to this forum, that do not have good intentions with their questions or with their comments. and you should leave your gd attitude in gd. EDIT: Hey the good news is you are the first person to make my ignore list, so shouldnt be a problem going forward. You can play policeman all you want and I wont see it. 
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Posted: 2/14/2019 11:49:25 AM EDT
[#16]
Quoted:
Can 31a see oob? |
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Posted: 2/14/2019 9:59:27 PM EDT
[#17]
Quote HistoryQuoted:
I am so lost with all this out of band discussion. I have no clue to what it even is. Can someone explain please so I can learn a little to what you guys are talking about? Above this wavelength, they are not sensitive to ir, and won't be able to form an image. A tube that is sensitive to ir at, say 1064nm, can form an image when an illuminator is used, or see a targeting laser at this wavelength. Therefore, if someone has a usual gen3 tube, they won't be able to tell they are being illuminated or targeted by someone using an oob tube , light and laser. Clearly, this could give a great advantage to people who have this technology, which is why care should be used in discussing this........ But some people think it is wrong to keep some information guarded, and think it should be freely and openly discussed and distributed. Yes, the information is already out there, if you are smart enough to look for, and understand it. It's a balance between getting information out and making it easy for bad guys from getting information and possibly using it against those that are considered good guys. |
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Posted: 2/14/2019 10:33:56 PM EDT
[#18]
Quote HistoryQuoted:
I am so lost with all this out of band discussion. I have no clue to what it even is. Can someone explain please so I can learn a little to what you guys are talking about? 
Now simply extend those wavelengths on out.....The Gen 3 stuff that goes from 800-1000 is pretty cool right? But the guy whos toys see from 800-1200 gets to see all your active tools and gets to use his own active tools that are in a band you cant see..... Of course this is all very super secret knowledge and the fact you've even posted in this thread makes you an enemy of the State so you should expect your door to be kicked in at any moment because words are bad and knowledge is secrets and your re-education is for your own safety.  
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Posted: 2/14/2019 11:09:42 PM EDT
[#19]
Quote HistoryQuoted: With the right tubes installed yes. |
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Posted: 2/14/2019 11:21:36 PM EDT
[#20]
Quote HistoryQuoted:
Typical gen3 tubes are sensitive and can form an image with ir up to a certain wavelength, usually dropping off greatly around 900nm. Above this wavelength, they are not sensitive to ir, and won't be able to form an image. A tube that is sensitive to ir at, say 1064nm, can form an image when an illuminator is used, or see a targeting laser at this wavelength. Therefore, if someone has a usual gen3 tube, they won't be able to tell they are being illuminated or targeted by someone using an oob tube , light and laser. Clearly, this could give a great advantage to people who have this technology, which is why care should be used in discussing this........ But some people think it is elitist to keep some information guarded, and think it should be freely and openly discussed and distributed. Yes, the information is already out there, if you are smart enough to look for, and understand it. It's a balance between getting information out and making it easy for bad guys from getting information and possibly using it against those that are considered good guys. |
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Posted: 2/14/2019 11:38:03 PM EDT
[#21]
Quote HistoryQuoted:
Maybe you should find another forum and go play Nanny mother elsewhere? I suppose you are one of those guys who wants the NFA to stay in place to because"MACHINEGUNS UR BAD!" Better ban those high capacity magazines too while we're at it...In fact maybe just turn in all our guns right? You support those gun bans do ya? Yeah, your elitist bullshit attitude rubs me right the fuck the wrong way. ETA. You have a simplistic understanding of the issues present as do many staunch defenders of information freedom. |
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Posted: 2/15/2019 1:46:39 PM EDT
[#22]
Quote HistoryQuoted:
He's right. This thread has already spread information to hostiles. I wish I were kidding. ETA. You have a simplistic understanding of the issues present as do many staunch defenders of information freedom. Trust me, the top minds in foreign militarys are not getting the hot breaking R&D info from AR15.com tech sections. If you believe that....Well, that point about simplistic would apply pretty well. Which leads me full circle. I dont support anyone who supports gun bans or working against our interests. We are our own worst enemy and this very thread simply supports that. If someone has access to classified information regarding OOB optics and capabilities I would trust they are smart enough not to some spill it all out on a public forum, wouldnt you? |
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Posted: 2/15/2019 1:53:12 PM EDT
[#23]
Quote HistoryQuoted:
Please show me where classified information has been leaked in this thread. Or anywhere in this sub section. Trust me, the top minds in foreign militarys are not getting the hot breaking R&D info from AR15.com tech sections. If you believe that....Well, that point about simplistic would apply pretty well. Which leads me full circle. I dont support anyone who supports gun bans or working against our interests. We are our own worst enemy and this very thread simply supports that. If someone has access to classified information regarding OOB optics and capabilities I would trust they are smart enough not to some spill it all out on a public forum, wouldnt you? |
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Posted: 2/15/2019 1:55:59 PM EDT
[#24]
Quote HistoryQuoted:
Please show me where classified information has been leaked in this thread. Or anywhere in this sub section. Trust me, the top minds in foreign militarys are not getting the hot breaking R&D info from AR15.com tech sections. If you believe that....Well, that point about simplistic would apply pretty well. Which leads me full circle. I dont support anyone who supports gun bans or working against our interests. We are our own worst enemy and this very thread simply supports that. If someone has access to classified information regarding OOB optics and capabilities I would trust they are smart enough not to some spill it all out on a public forum, wouldnt you? |
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Posted: 2/15/2019 2:20:49 PM EDT
[#25]
Quote HistoryQuoted: I bet people had same fears over the 850nm stuff when it was first being made available commercially. Now it's a hot item and TNVC fought a good fight to have it available |
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Posted: 2/15/2019 2:23:20 PM EDT
[#26]
Quote HistoryQuoted:
I wouldn't trust people people to know how their bit of info fits into that larger picture. Caution is warranted. "Common sense gun control" "Shouldnt be in civilians hands" You dont need that" "Reasonable restrictions" I know exactly where some people are coming from. They are more than welcome to dance around the internet in a Nazi uniform pushing all those "good" reasons to ban guns, equipment and information but dont think it in any way makes them a friend of the shooting community. Now please, show me where classified information has been leaked in this thread or any post in the NV sub section? Can we talk about it or does "reasonable restrictions"..."You dont need that"...apply? EDIT: And on that note I wont respond further. I think we all have made our positions clear and I dont want to drag an otherwise interesting thread off topic any more! (Although you are more than welcome to respond to what I've said) |
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Posted: 2/15/2019 2:25:32 PM EDT
[#27]
The cautioning post was warranted. I won’t turn this into GD.
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Posted: 2/15/2019 2:30:52 PM EDT
[#28]
I dont really see how tunable emission systems would be terribly advantageous. Doenst "oob" equipment still see into the "in band" spectrum?...ie....If you use band 1 and I use band 2, why would I want to tune my emission equipment down to band 1? Why not simply stay at band 2 all the time? Perhaps if you needed compatibility with legacy equipment or less equipped militarys maybe but it seems the push will be to just keep moving higher up the bands wouldnt it?
It feels like the push would simply be to extend visibility into higher and higher bands without the need to have "backwards compatibility". |
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Posted: 2/15/2019 2:48:56 PM EDT
[#29]
Quote HistoryQuoted:
I dont really see how tunable emission systems would be terribly advantageous. Doenst "oob" equipment still see into the "in band" spectrum?...ie....If you use band 1 and I use band 2, why would I want to tune my emission equipment down to band 1? Why not simply stay at band 2 all the time? Perhaps if you needed compatibility with legacy equipment or less equipped militarys maybe but it seems the push will be to just keep moving higher up the bands wouldnt it? It feels like the push would simply be to extend visibility into higher and higher bands without the need to have "backwards compatibility". |
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Posted: 2/15/2019 8:30:42 PM EDT
[#30]
Quote HistoryQuoted: Seems like a cheaper route for seeing longer wavelengths without secret items, could be to make a clip on to regular NV which is just a digital camera that can see into longer wavelengths, perhaps with a cut filter for anything below 1000nm, and make an overlay with it like the COTI does for thermal |
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Posted: 2/15/2019 11:41:24 PM EDT
[#31]
Quote HistoryQuoted: Seems like a cheaper route for seeing longer wavelengths without secret items, could be to make a clip on to regular NV which is just a digital camera that can see into longer wavelengths, perhaps with a cut filter for anything below 1000nm, and make an overlay with it like the COTI does for thermal However, it also highlights the problems with some OOB development which assumes a single dimension of detection being "Wavelength". OOB systems hide in at least two dimensions. A camera won't detect them all that well even if it picks up the same band. David |
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Posted: 2/17/2019 1:12:20 PM EDT
[#32]
Quote HistoryQuoted:
These do exist and were developed. I don't know if they were ever used though. However, it highlights the problems with some OOB development which assumes a single dimension of detection being "Wavelength". OOB systems hide in at least two dimensions. A camera won't detect them all that well even if it picks up the same band. David |
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Posted: 2/17/2019 5:40:05 PM EDT
[#33]
Quote HistoryQuoted:
These do exist and were developed. I don't know if they were ever used though. However, it also highlights the problems with some OOB development which assumes a single dimension of detection being "Wavelength". OOB systems hide in at least two dimensions. A camera won't detect them all that well even if it picks up the same band. David |
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Posted: 2/18/2019 8:34:38 AM EDT
[#34]
Know what? I don't think these threads will ever be satisfactory for me so I'll test it myself.
I have Echo's coming in. I should have a 980nm and a 1064nm laser built up soon but just waiting to confirm. Need to make sure neither of them will blow up my eyes or my tubes. Quoted:
So I watched the trailer and it looked cool, then it looked stupid, then I read the Wikipedia entry on it, and Bose-Einstein-Condensate? Freezing people? Give me a break... The movie started with a really cool premise when you are watching it and by the end it was just bad. |
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Posted: 2/19/2019 7:57:26 AM EDT
[#35]
We've done this thread before, posted links to where you can purchase off the shelf LED's above 1000nm. The thing is, when you start getting above 1000nm stuff starts acting really wonky. Fabrics will reflect more light (https://image.slidesharecdn.com/militarycamouflagecolours-130418073351-phpapp01/95/military-camouflage-colours-35-638.jpg?cb=1366270496). Photonis really negated US NVG Doctrine. Since Photonis isn't governed by ITAR, lol, anyone can purchase them and enjoy painting lasers on Gen 3 that can't be seen by Gen 3 (https://en.wikipedia.org/wiki/Nd:YAG_laser) which we have been discussing here for over a few years.
So many Chinese LED companies will just send you a complete laser or flashlight in whatever wavelength you want if you hit them up on that Chinese messenger service. Or buy in the USA: https://www.digikey.com/products/en/optoelectronics/infrared-uv-visible-emitters/94?k=1050nm I'll just start referencing my claims from now on to make sure no one can just claim something to be something it isn't. If you have questions feel free to ask, the age of it's classified or ITAR are pretty much dead considering Hamamatsu publishes whatever it feels like and ITAR can't stop them. |
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Posted: 2/20/2019 3:40:17 AM EDT
[#36]
Recently tested Photonis ECHO WP tubes and Harris Gen3 GP tubes with a 985nm light. Well BOTH the Photonis and Harris tubes were able to view the output from the light. I perceived a little bit more light via the Photonis tubes, but I can't discount that being down to the difference between WP and GP or other factors.
Maybe it shouldn't be that surprising, as the spectral range for this particular 985nm light starts around 950nm (it peaks somewhere around 970-985nm and falls off at 1050nm) and patents for Gen3 tubes going as far back as 1998 indicate sensitivity at 980nm (L3 in particular for a patent I pulled up). Now I can see why the peak wavelengths of OOB LAMs like the MAWL CLAD are 1064nm. Incidentally, the Sionyx Aurora can also detect the output from the 985nm light. Looking forward to testing with 1050nm and 1064nm lights in the near future. |
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Posted: 2/20/2019 9:38:54 AM EDT
[#37]
Quote HistoryQuoted:
Recently tested Photonis ECHO WP tubes and Harris Gen3 GP tubes with a 985nm light. Well BOTH the Photonis and Harris tubes were able to view the output from the light. I perceived a little bit more light via the Photonis tubes, but I can't discount that being down to the difference between WP and GP or other factors. Maybe it shouldn't be that surprising, as the spectral range for this particular 985nm light starts around 950nm (it peaks somewhere around 970-985nm and falls off at 1050nm) and patents for Gen3 tubes going as far back as 1998 indicate sensitivity at 980nm (L3 in particular for a patent I pulled up). Now I can see why the peak wavelengths of OOB LAMs like the MAWL CLAD are 1064nm. Incidentally, the Sionyx Aurora can also detect the output from the 985nm light. Looking forward to testing with 1050nm and 1064nm lights in the near future. |
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Posted: 2/20/2019 10:57:32 AM EDT
[#38]
Quote HistoryQuoted:
Recently tested Photonis ECHO WP tubes and Harris Gen3 GP tubes with a 985nm light. Well BOTH the Photonis and Harris tubes were able to view the output from the light. I perceived a little bit more light via the Photonis tubes, but I can't discount that being down to the difference between WP and GP or other factors. Maybe it shouldn't be that surprising, as the spectral range for this particular 985nm light starts around 950nm (it peaks somewhere around 970-985nm and falls off at 1050nm) and patents for Gen3 tubes going as far back as 1998 indicate sensitivity at 980nm (L3 in particular for a patent I pulled up). Now I can see why the peak wavelengths of OOB LAMs like the MAWL CLAD are 1064nm. Incidentally, the Sionyx Aurora can also detect the output from the 985nm light. Looking forward to testing with 1050nm and 1064nm lights in the near future. Looking forward to hearing your results also - David. |
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Posted: 2/20/2019 1:06:08 PM EDT
[#39]
Just FYSA:
L3 UF WP, L3 Filmed P43, and Harris/ITT Pinnacle can all see 1064nm up close—at least with the marking device I have (which may admittedly have some “bleed” compared to a laser), but nowhere near the intensity or distance of the same manufacturer’s NIR (this is as specific as I’m going to go, so don’t ask) equivalent product, I’ll have to double check on the exact wavelength the IR is operating at, and both are designed to be detected in excess of three statute miles with the appropriate sensor systems. i.e. visible if you’re standing right next to them, but not operationally useful. Nothing from any of them at 1550nm. ~Augee |
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Posted: 2/20/2019 1:25:20 PM EDT
[#40]
What are, if any, risks to a non-oob gen 3 tube if someone operating in those higher bands were to light you up from the front where the oob laser/light was entering the tube?
Edit to add: Beside the fact that you're tactically fucked of course in that situation, lol |
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Posted: 2/20/2019 1:31:47 PM EDT
[#41]
Quote HistoryQuoted:
What are, if any, risks to a non-oob gen 3 tube if someone operating in those higher bands were to light you up from the front where the oob laser/light was entering the tube? Edit to add: Beside the fact that you're tactically fucked of course in that situation, lol |
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Posted: 2/20/2019 3:57:24 PM EDT
[#42]
Mainly, would there be any observable changes in image you'd see before damage would occur, you wouldn't until it's too late tube is damaged, or if it wouldn't damage it because it can't "see" it.
Quote HistoryQuoted:
That's a good question. Would think a LIF would be near useless in that scenario but not positive Quote HistoryQuoted:
That's a good question. Would think a LIF would be near useless in that scenario but not positive Quoted:
What are, if any, risks to a non-oob gen 3 tube if someone operating in those higher bands were to light you up from the front where the oob laser/light was entering the tube? Edit to add: Beside the fact that you're tactically fucked of course in that situation, lol |
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Posted: 2/20/2019 11:42:54 PM EDT
[#43]
Quote HistoryQuoted:
Above 950nm, for out of band purposes, a narrow band is critical, so you need a laser and it needs to lase. You can't operate it in LED mode. LEDs have far too much spread. Looking forward to hearing your results also - David. |
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Posted: 2/21/2019 12:08:31 AM EDT
[#44]
Quote HistoryQuoted:
What are, if any, risks to a non-oob gen 3 tube if someone operating in those higher bands were to light you up from the front where the oob laser/light was entering the tube? Edit to add: Beside the fact that you're tactically fucked of course in that situation, lol Lets say the quantum efficiency of your tube is like 1% at whatever frequency the bad laser pointed at you is at. You basically aren't gona see it in the tube, nor is it going to "burn" your tube because it can't amplify light at that frequency. Of course as you said, tactically you're fucked... |
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Posted: 2/21/2019 2:36:18 AM EDT
[#45]
Quote HistoryQuoted:
Just FYSA: L3 UF WP, L3 Filmed P43, and Harris/ITT Pinnacle can all see 1064nm up close—at least with the marking device I have (which may admittedly have some “bleed” compared to a laser), but nowhere near the intensity or distance of the same manufacturer’s NIR (this is as specific as I’m going to go, so don’t ask) equivalent product, I’ll have to double check on the exact wavelength the IR is operating at, and both are designed to be detected in excess of three statute miles with the appropriate sensor systems. i.e. visible if you’re standing right next to them, but not operationally useful. Nothing from any of them at 1550nm. ~Augee |
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Posted: 2/21/2019 2:39:03 AM EDT
[#46]
Quote HistoryQuoted:
That's a good question. Would think a LIF would be near useless in that scenario but not positive |
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Posted: 2/21/2019 2:42:00 AM EDT
[#47]
Quote HistoryQuoted: Along with more power in our studies as the frequency |
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Posted: 2/21/2019 2:46:39 AM EDT
[#48]
Quote HistoryQuoted:
Recently tested Photonis ECHO WP tubes and Harris Gen3 GP tubes with a 985nm light. Well BOTH the Photonis and Harris tubes were able to view the output from the light. I perceived a little bit more light via the Photonis tubes, but I can't discount that being down to the difference between WP and GP or other factors. Maybe it shouldn't be that surprising, as the spectral range for this particular 985nm light starts around 950nm (it peaks somewhere around 970-985nm and falls off at 1050nm) and patents for Gen3 tubes going as far back as 1998 indicate sensitivity at 980nm (L3 in particular for a patent I pulled up). Now I can see why the peak wavelengths of OOB LAMs like the MAWL CLAD are 1064nm. Incidentally, the Sionyx Aurora can also detect the output from the 985nm light. Looking forward to testing with 1050nm and 1064nm lights in the near future. |
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Posted: 2/21/2019 9:43:02 AM EDT
[#49]
Quote HistoryQuoted: Glad someone is doing actual testing though the tubes are picking up some residual pump laser energy (808nm most probably) and not the 1064nm beam itself. Leaking a few microwatts at 808nm isn't indicative of anything wrong when the pump source is 250mW at a minimum, probably way spicier if your toy is as fun as it sounds. At 1064nm, there's zero response even with a high power (>10mW) beam in a completely dark room with the spot a foot or two from the NV device if the beam is fully filtered, fully filtered to an extreme degree that isn't typically practical or necessary even in a very high end product. David. edit: I should add that they tend to be very expensive... Several hundred even for the cheapest diodes. |
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Posted: 2/21/2019 10:07:53 AM EDT
[#50]
Quote HistoryQuoted: LIF would do its job and reflect the OOB source unless its significantly away from the notch of interest. |
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