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Old 08-06-2010, 11:16 PM #17
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Default Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

Infrared is expressed as heat, so just stick your hand in front of it!

Just got laid off today, so be happy I even have THAT much of a sense of humor.


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Old 08-06-2010, 11:56 PM #18
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Default Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

At 2mW, I'd be there a LONG time. But - what Heruur is saying is essentially that; basically that's what the TEC would be doing. A LPM too I suppose, I just gotta either get it down to Boulder or finally do the Kenometer thing.

Sorry to hear about the job situation -- that seems to be rather common lately :\
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612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
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544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
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473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
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Old 08-07-2010, 04:31 PM #19
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Default Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

1.15 I'd use the stock cu doped ZnS phosphor link I sent you. Cu is the dopant that enables glowing, its about 6 parts per million fused into the ZnS when its fired in a oven, then ground. So you just buy from the link. I know the Post Apple stuff works.

For 3.39 I do have some spare sensor modules, you need +/- 9 to 15 volts (ie 2 9 volt batteries) and a small metal disk with a chopper wheel on it. You'll also need something to power the TE that cools the sensor. It will run without the TE powered up, but the detection is then weak. The sensor only responds to pulsed IR light, so you need to make the laser "blink". I've gotten away with breaking beams with my spread fingers and watching a scope, but if you want to read it with just a voltmeter, you need a spinning disk with holes in front of it or some sort of spining plastic blade.. Don't care about the speed of the disk etc, as long as something chops the beam, ie fan from a PC, toy something etc.

Deal of the century, one module, one time only, with processing board, working, tested: 35$ and shipping. Thats what I paid for them. They cover 2 to 5 microns. One glitch, cannot be exported out of the states. 3.39 is so damn hard to detect, and high end thermal imagers (military uses 3.5 as well as 8 microns) dont grow on trees, so this is probably the only way you'll ever see it, unless you get lucky with a detector card of the type that is UV pumped. Once you find you have a beam, call Sam Goldwasser and sell him that thing... The module is easy to test, it'll "see" the flame from a propane torch or match. It ignores visible light.

I just looked at a chart, you may still see the 3.39 with the ZnS:cu phosphor, but barely.

PM me if you want one, I'll actually bother to check my PMs for the next few days.

Steve

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Old 08-07-2010, 05:29 PM #20
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Question Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

Uhm, maybe an old PIR sensor can work ?

Still have some doubt, cause the heat generated from human bodies is usually in the 9-to-10 microns (9000 to 10000 nm) ..... need to find some datasheets for see what is the "cutoff" wavelenght of the PIR windows .....
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Old 08-07-2010, 07:48 PM #21
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Default Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

Quote:
Originally Posted by LSRFAQ View Post
For 3.39 I do have some spare sensor modules, you need +/- 9 to 15 volts (ie 2 9 volt batteries) and a small metal disk with a chopper wheel on it.

I just looked at a chart, you may still see the 3.39 with the ZnS:cu phosphor, but barely.

PM me if you want one, I'll actually bother to check my PMs for the next few days.

Steve
Steve, I do want one so I will PM you shortly. No worries on export, no plans to do so. I also ordered some of the phosphor. Thanks for the info and will PM you shortly.
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW
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Old 08-09-2010, 02:53 AM #22
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Default Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

Quote:
Originally Posted by HIMNL9 View Post
Uhm, maybe an old PIR sensor can work ?

Still have some doubt, cause the heat generated from human bodies is usually in the 9-to-10 microns (9000 to 10000 nm) ..... need to find some datasheets for see what is the "cutoff" wavelenght of the PIR windows .....
You can order piezo IR sensors that will work at 3.5 uM, however the ones for sensing body heat are windowed with a filter for, you guessed it, 8-9 microns or so. This is done to reduce false alarms,

If you can de-can/de-window the sensor, you could try a motion sensor part at 3.5 u.

Steve
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Old 08-09-2010, 03:43 AM #23
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Default Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

Hey Steve - Just a quick bump in re: the PM I sent you in regards to buying that IR sensor.

Still waiting for my ZnSe to arrive, maybe just maybe that'll do the trick, but would like to get something more definite.
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3392nm:REO LHIP HeNe 2mW ∙ 980nm:OLIKE 155mW

808nm:OLIKE 200mW ∙ JETL PLC 600mW(682pk)
780nm:OLIKE 120mW
685nm:18650 47mW
671nm:PGL3M 281mW DPSS ∙ PGL3C 278mW
655nm:LOC 254mW ∙ OLIKE 221mW ∙ Yob 320mW
638nm:Sanyo 40mW ∙ HL63133 200mW ∙ PGL3C 463mWpk ∙ ML520 700mW
633nm:JDS1145 HeNe 28mW ∙ JDS1145 HeNe 26mW
612nm:MG 05LOR151 HeNe 3mW ∙ REO LSTP 3mW
609nm:REO LHOR 1mW
604nm:REO LSTP 2mW
594nm:Rigel 3mW ∙ LG PGL3C 15mWpk ∙ Lasos 7512 3mW ∙ CNI MGL3 58mWpk
589nm:CNI PGL3C 106mW ∙ CNI PGL3C 85mW
561nm:CNI PGL3C 30mW(41pk)
556nm:CNI PGL3C 20mW(22pk)
544nm:JDS1675P HeNe 2mW ∙ REO LHGR 2mW ∙ Lasos 7786 2mW
532nm:PGL3C 150mW(180pk) ∙ PGL3C 578mWpk ∙ PLC 440mWpk
515nm:JDS 221420GL ArI 30mW
510nm:52mW DG#2 ∙ 50mW 26650 DG
488nm:Nlx DPSS 7mW ∙ JDS 2214 ArI 40mW ∙ JDS FCD488 DPSS 25mW
ML:MG 65A106025 ArI ML 115mW
476/480nm:Nichia Diode 28mW
473nm:PGL3A 45mW(80pk) ∙ PGL3C 110mWpk ∙ PGL3C 95mWpk ∙ RPLB-25 60mWpk
465nm:DTR NDB7676 2.03w
458nm:JDS 2214VL ArI 8mW ∙ JDS 2214VL ArI 12mW ∙ RHD Diode 1.7W
452nm:Osram SM 47mW
445nm:Yob 1410mW ∙ Polaris 156mW ∙ PGL3C 1200mW ∙ DTR-EHG 32650 2136mW
405nm:Yob 630mW ∙ Qfox 750mW ∙ JETL PLC 780mW
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Old 08-09-2010, 11:59 AM #24
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Default Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

Quote:
Originally Posted by LSRFAQ View Post
You can order piezo IR sensors that will work at 3.5 uM, however the ones for sensing body heat are windowed with a filter for, you guessed it, 8-9 microns or so. This is done to reduce false alarms,

If you can de-can/de-window the sensor, you could try a motion sensor part at 3.5 u.

Steve
Uh, i considered the thing ..... i have some unused old PIR sensors, and no problems in decanning or taking away the original window, but then i don't know exactly what to use for substitute it .....

Mean, thinking to replace it with something different, for avoid dust / mist contamination of the sensor surface ..... but i'm not used to work with these wavelenghts, and don't know what materials can be transparent from, say, 1 to 10 microns, and relatively opaque to visible light ..... and i guess standard glass is not the better choice .....

ZnSe glass ? ..... i used ZnSe lenses for CO2, but CO2 is 10500 ..... and they cost a lot, also in surplus market ..... also have an ER:YAG cavity, somewhere, but is practically new, and i don't want to dismantle it just for an experiment (and, anyway, as far as i remember, the inside optics are matched for 2,94 microns) ..... and others are so difficult to find, that is a nightmare ..... maybe ZnSe is still the better choice, if can be found a thin piece ..... or some of the new "exotic" plastics .....


Edit: i just found that "diamond" can be a good choice ..... but just a bit too high in cost, for my budget
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Old 08-10-2010, 12:35 AM #25
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Default Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

[QUO
Edit: i just found that "diamond" can be a good choice ..... but just a bit too high in cost, for my budget [/QUOTE]

NaCl or KBr work fine from almost FAR IR to daylight and are cheap. KBr is used in IR spectroscopy for holding samples, but is very toxic. KBR is soft, you mix the sample with it and press it into a window with a hydraulic ram.

A NaCl window should be about 9$.

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Old 08-18-2010, 04:14 PM #26
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Default Re: Any way to detect 3390nm? (HeNe) - Camera won't work.

A few materials that are transparent around 3um: magnesium fluoride, calcium fluoride, sapphise, zinc selenide, silicon and germanium (as far as I know).
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