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Old 01-16-2016, 05:20 AM #2193
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

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Originally Posted by micheal rosen View Post
no, the former owner (the wife of the builder) said that it could burn things (i think they said "scorch surfaces" or something to that effect) so whatever it is its not a HeNe. it could be a compact YAG or ruby laser.
N2 lasers have very high peak powers, usually about 100kW. I doubt it's anything FL excited, I can't see where you'd even put one. (metal tube is too small to hold a FL and a rod)


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Old 01-16-2016, 05:20 AM #2194
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

It looks like a gutted gas laser. the big cap in front is too low a voltage for most flashlamps I know of. probably some housing for a very early pulsed gas laser?
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483nm Omni-643RYB Whitelight Line
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496.5nm: Argon Ion Line
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Old 01-16-2016, 05:24 AM #2195
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

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Originally Posted by ultimatekaiser View Post
It looks like a gutted gas laser. the big cap in front is too low a voltage for most flashlamps I know of. probably some housing for a very early pulsed gas laser?
Assuming everything is still actually on it and it's just been deactivated, I can't see what else it would be.
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Old 01-16-2016, 05:26 AM #2196
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

no, its pretty clearly missing parts. if nothing else the power junction connector is a hole. the upper portion is clear, implying something was in there to be demonstrated. its not gas tight, and it looks like the back cap connected to something that is no longer present. there are flying leads in the supply as well, though she states that some stuff was disconnected.
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543.5nm: 05-LGR-193 Melles Griot HeNe 3.8mW
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577nm: Coherent Genesis MX Taipan OPSL
583.8nm: DPSS line
586.2nm: DPSS line
588.6nm: CNI PGL-M-80

591nm: DPSS line
593.5nm CNI MGL-H-50 Lab Laser
594.1nm: Coherent 31-2230-000 (4.5mW)

604.6nm: LOR-150 HeNe line
609nm: Raman HeNe line?
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Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
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659.6nm: Laser Quantum IGNIS DPSS laser 0.5W

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690nm: custom diode laser
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Last edited by ultimatekaiser; 01-16-2016 at 05:29 AM.
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Old 01-16-2016, 05:37 AM #2197
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

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Originally Posted by ultimatekaiser View Post
no, its pretty clearly missing parts. if nothing else the power junction connector is a hole. the upper portion is clear, implying something was in there to be demonstrated.
I dunno, that support disc in the middle means that whatever was being demonstrated would be rather small. I'm thinking it was clear to show the size of the metal tube. The seller says it was part of a program to miniaturize lasers after all.

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its not gas tight, and it looks like the back cap connected to something that is no longer present.
Well it's obviously not sealed, even if it was it would have probably already breached just from sitting for 50 years lol. Not sure what you mean by the back cap, do you mean capacitor or cap on the tube?
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Old 01-16-2016, 01:30 PM #2198
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N2 lasers have very high peak powers, usually about 100kW. I doubt it's anything FL excited, I can't see where you'd even put one. (metal tube is too small to hold a FL and a rod)
Yeah, it could very well be a nitrogen laser.
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Old 01-16-2016, 03:58 PM #2199
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

450V is enough for a medium size flash lamp. Xenon camera flashes are ~300V for example. The lamp operating voltage also depends on the fill pressure. Since this was supposedly an attempt to miniaturize, it would make sense. There is not enough circuitry there to do more than charge/discharge the cap. Discharge it through what? Flash lamp makes the most sense to me. Probably a ruby laser, with the flash lamp and ruby missing, since those parts would have been useful elsewhere.

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Old 01-16-2016, 06:03 PM #2200
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Hmmm true, but still a very high capacitance for a lamp. Usually most lamps use high voltage and very low capacitance, most I've seen are around 40-45mF... But I do see your point...Though camera flashes are generally relatively weak to drive laser rods. I've pumped small YAGs, that way but not likely you can pump a ruby with something like that. They're pretty difficult to lase. I own a vintage portable ruby laser, pretty much the first truly portable one and it's got two very powerful, very high quality xenon flashlamps that take a 2x40mF 2800V bank to run. YAGs have a much shorter pulse lifetime than ruby does though, and are easier to pump, so who knows?
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476.5nm: Argon Ion Line

483nm Omni-643RYB Whitelight Line
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496.5nm: Argon Ion Line
501.7: Argon Ion Line
514.5nm: Argon Ion Line
520nm: Trustfire A8 Custom

532nm: CNI MGL-F-3W, Coherent Genesis MX Taipan OPSL, LG Hercules-325
543.5nm: 05-LGR-193 Melles Griot HeNe 3.8mW
Melles Griot LGB-563 HeNe

561nm: Melles Griot 85-YCA-015, Coherent Sapphire 561-20
568nm: Omni-643RYB Whitelight Line

577nm: Coherent Genesis MX Taipan OPSL
583.8nm: DPSS line
586.2nm: DPSS line
588.6nm: CNI PGL-M-80

591nm: DPSS line
593.5nm CNI MGL-H-50 Lab Laser
594.1nm: Coherent 31-2230-000 (4.5mW)

604.6nm: LOR-150 HeNe line
609nm: Raman HeNe line?
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659.6nm: Laser Quantum IGNIS DPSS laser 0.5W

671nm: CNI PGL-III-C-100
676nm: Omni-643RYB Whitelight Line
690nm: custom diode laser
694nm: Portable Q-switched Ruby Laser

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Old 01-17-2016, 09:09 PM #2201
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

These must not be selling as fast, likely because parts are not selling as fast.
Anyway the price keeps falling.

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Old 01-17-2016, 09:43 PM #2202
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These must not be selling as fast, likely because parts are not selling as fast.
Anyway the price keeps falling.

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Would those have m140's or am I really behind...
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Old 01-21-2016, 04:58 AM #2203
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

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Would those have m140's or am I really behind...
So far behind you can't even see tail lights anymore.
-------------------------------------------------------------------------------------------------------------------------------

I still love the 7875's and with the high quality lens it's a deal, put 2 side by side and you have a nice leaf burner as these diodes have good energy density as per their divergence, but you all know that. Still with the glass there a bargain.

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Old 01-21-2016, 06:57 AM #2204
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

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Originally Posted by ultimatekaiser View Post
Hmmm true, but still a very high capacitance for a lamp. Usually most lamps use high voltage and very low capacitance, most I've seen are around 40-45mF... But I do see your point...Though camera flashes are generally relatively weak to drive laser rods. I've pumped small YAGs, that way but not likely you can pump a ruby with something like that. They're pretty difficult to lase. I own a vintage portable ruby laser, pretty much the first truly portable one and it's got two very powerful, very high quality xenon flashlamps that take a 2x40mF 2800V bank to run. YAGs have a much shorter pulse lifetime than ruby does though, and are easier to pump, so who knows?
I agree. I saw my first ruby rod laser in 1965 and it was much larger than the one pictured in the eBay offering. It must be some gas laser and since it was supposedly from the 60s I figured it was most likely a HeNe as there weren't many other gas lasers around at that time. I doubt seriously that the thing ever burned anything at all.
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Old 01-21-2016, 03:43 PM #2205
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Quote:
Originally Posted by RedCowboy View Post
I still love the 7875's and with the high quality lens it's a deal, put 2 side by side and you have a nice leaf burner as these diodes have good energy density as per their divergence, but you all know that. Still with the glass there a bargain.

2 Pcs Nichia NDB7875 450nm 9mm Laser Diode with Single Element Glass Lens | eBay
I had some of those sent to me from them when I saw them pop up with that different lens housing on the top. I don't know what projector they are pulling them from but was hoping for a new supply of G-9 lenses. When I got them was a little disappointing as the diodes definitely had some hours on them. The raw output from the diode window was filthy and most I was not able to fully clean up. Then another bummer the lens is glued in there like crazy. Cracked all of them to some degree trying to get them out. When I got them out they wer not a G-9 as on the BenQ pulls. It is a smaller 5mm lens where the G-9/G-1/G-2 is a 6.3mm lenses and would not fit in any of the barrels I have so was not able to do any good testing on them. Sent some off to Angelos to do some testing on.
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Old 01-21-2016, 03:49 PM #2206
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Good info, I was afraid thy could be used.
I would rather have new because like a car mileage matters.
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Old 01-25-2016, 01:50 PM #2207
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

fyi I'm bidding on
5mW 445nm 450nm Blue Ray Portable Laser Lazer Pointer Point Pen | eBay
Dunno if anyone was bidding against me, just thought I'd throw that out there.
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Old 01-25-2016, 02:28 PM #2208
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Default Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

5mw is very low power! will be hard to see dot ,green is beater for a low power laser
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