Old 11-01-2014, 12:26 AM #17
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Yes thank you Hemlock, you pretty much said it all. that and some of us actually like to collect the wavelengths, and the IR hene wavelengths are very rare. So it's kind of like showing off a trophy. Aside from Aryntha, i'm not sure I know anyone else who has an IR HeNe laser that works. (Not counting RAMAN gas analyzers just stand alone tubes)



Last edited by ultimatekaiser; 11-01-2014 at 12:28 AM.
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Old 11-01-2014, 12:40 AM #18
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

As sung by the Moody Blues ---
"To know UV, IR and X-ray, Beauty to find in so many ways"
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Old 11-01-2014, 12:42 AM #19
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Ah yes... Good ol' UV.... I'll be playing with 325nm again soon...probably Monday... yay foreshadowing.
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Old 11-01-2014, 12:48 AM #20
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

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Crazy ---
It is not just a hobby, It is the science!!!!
Everyone wants to burn something BUT
there are some tempted to actually experiment.
HMike
Im beyond the burning laser excitement. I wish I had the money to go after more experimental things- mainly solid state. But even if I had the money, the materials are hard to find besides buying them brand new.

I was moreso asking what kind of experiments you can do with them- not like visible light where you can see how many lines you can get out of a brewster tube, for example.
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Old 11-01-2014, 01:03 AM #21
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Kind of depends on the wavelength just like visible light. IR tends to be used for scanning purposes. Leak detection/surface scanning and communications fiber optics testing tends to be what IR henes were used for. 1523 is used on fiber a lot because henes are very spectrally clean. The other two IR lines are not used all that much. I think they're also used in interferometry a lot. They tend to be used in a lot of applications where sensors need to respond different light sources to avoid conflicts.
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Old 10-23-2015, 12:10 AM #22
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

I always settle on REO being my favorite HeNe company, based solely on their "special snowflake" tendencies.

Then posts like remind me of that "I don't want to follow society's rules" phase that SP went through. With their 107/27/25's especially.

Nice thread bud! And thanks for the shoutout. My birthday was indeed not long away.
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Old 10-23-2015, 12:15 AM #23
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Yes. We've both Been away for a long time, and I haven't seen you on Skype at all. I hope you've been doing well and happy birthday again! It's hard to believe that it's been a year since I posted this Beautiful laser. I recently found out that the reason it has relatively hard time starting is because the pressure is a little bit low. I've actually been helium soaking a bunch of my low-pressure tubes as an experiment, including a couple of very rare ones, so I'll let you know how it turns out.
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Old 10-23-2015, 12:26 AM #24
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

I honestly didn't realize this was from last year. Well, then yes, two birthdays haha

Also yes, I have been away for some time now. All the work I was doing began catching up financially. Had to knock that off before I was actually in the hole. I also don't have a working PC. And mobile skyping...ugh.

Keep me in the loop in regards to your tube soaking escapades. I am quite interested in the turnout.

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Old 10-23-2015, 12:34 AM #25
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Indeed so far it is looking promising, they're improving slowly but steadily. I don't want to post too much here, but I promise I'll be posting on it. I've been working on refurbishing a whole bunch of gas lasers lately...
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Old 10-23-2015, 12:48 AM #26
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Should be an interesting write up. I can't think of any tubes of mine needing a refurb. My HeNes are pretty happy, the HeCd IS refurbished. Had something like 10 hours on it when I got it...? My ions though, they need a little work.

Reminds me of the tunable Ar that I still need to realign. Now that I have the space for it....hmmmm...

Plus there's the 488nm SL that won't lase. White light checked out during my last run, but I've kinda neglected them for a couple months..
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HeNe/gas reference thread

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Old 10-23-2015, 01:57 AM #27
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Yeah I've got several HeCds burning off excess Helium, though one needs a small alignment tuneup, and several HeNe tubes soaking. My ions are happy as can be. I can probably realign the tunable if needed. It's not too hard, but definitely more than the regular ones. If it's just the prism end, it's easier though the prism just is more picky than the mirrors.
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Old 10-23-2015, 02:06 AM #28
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Quote:
Originally Posted by ultimatekaiser View Post
Yeah I've got several HeCds burning off excess Helium, though one needs a small alignment tuneup, and several HeNe tubes soaking. My ions are happy as can be. I can probably realign the tunable if needed. It's not too hard, but definitely more than the regular ones. If it's just the prism end, it's easier though the prism just is more picky than the mirrors.
It's going to need to be aligned fully from scratch. I'll need to remove the OC and align the prism end, then add and align the OC.

It wouldn't be *too hard* if I hadn't been so nooby when I first got it, started turning non-tuning knobs, jacked up the alignment, and turned just about all 6 nuts by the end of the night.

For lack of a better word - its f***ed. It'll be a task getting it back in order. I just need to pick it up tomorrow and see if I can even remove the OC. As well as make my first change that I can't come back from.

I'm not looking forward to it. I'm really not. But at this point, the only thing that could make it *worse* would be removing the mirrors and leaving them off. It's already at a pretty bad low.

So. Pop off the OC, fire up my 543, see what I can do. Or perhaps use the 488nm from the ArKr...or see if I can get my 488nm working. Those are ideas listed from worst to best option.
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HeNe/gas reference thread
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Old 10-23-2015, 02:19 AM #29
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Gotcha I'll pm you shortly so we're not offtopic. I can guide you through it pretty easy if you have time, as I'm off of work tomorrow and tonight. I had to do my 643 a few times it's easiest if you have a 488 lab or another argon to get you started that way you're using a WL in use by the laser so the refraction matches. I've not had to do the regular argon tunable, but I did have to do a mixed gas tunable a bit ago, I imagine yours is similar in structure. It's a 543 isn't it?

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Old 10-23-2015, 02:24 AM #30
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Quote:
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Gotcha I'll pm you shortly so we're not offtopic. I can guide you through it pretty easy if you have time, as I'm off of work tomorrow and tonight. I had to do my 643 a few times it's easiest if you have a 488 lab or another argon to get you started. I've not had to do the regular argon, but I did have to do a mixed gas tunable a bit ago, I imagine yours is similar in structure. It's a 543 isn't it?
The tunable is an Omni 532. I have three sources of 488nm. The single line (PSU malfunctioning), the ArKr (large to work with, taller than 532) and the 488nm OPSL that I got from Zach at SELEM. Not 100% on the magic behind OPSLs, so I was weary to use it as a guide and have that coupled output feed back into the optics.

Anyway; standing by for PMs.
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405nm 500mW
442nm 15mW Melles Griot HeCd
445nm 1W
455nm 100mW LaserBTB
457nm Tunable OMNI 532
465nm Tunable OMNI 532
467nm 1.8W NDB7675
472nm Tunable Omni 532
473nm 2x 100mW Melles Griot lab heads w/ PSUs
476nm Tunable OMNI 532
488nm Single line 35mW
496nm Tunable OMNI 532
502nm Tunable OMNI 532
514nm Tunable OMNI 532
520nm 40mW MSV2
532nm Various pointers
543nm GreeNe 2mW
568nm ~20mW ArKr whitelight line
589nm 126mW PGL-III-C
594nm Rigel-6; 4.75mW + <1mW
604nm 2x <1mW multiline
609nm Ne Penning mixture Ar line from REO 612nm
612nm HeNe 1mW ML 4 line; Raman 6 line
629nm <1mW Raman 6 line
633nm 1-4mw red HeNe
635nm Raman 6 line
638nm 20mW single mode
640nm Raman 6 line
647nm ~10mW ArKr whitelight Kr line
650nm Raman 6 line
658nm LPC-826
685nm 20mW
808nm Modded NewWish pen


HeNe/gas reference thread
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Old 11-01-2015, 12:44 AM #31
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

I do, I have a sealed mirror 1152 REO head.

It has uses such as mapping gas flow as a LIDAR. There are a lot of gasses that adsorb at 1152 etc...

Steve
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Old 11-01-2015, 02:01 AM #32
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lazerman121 lazerman121 is offline
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Default Re: A little piece of history...and my quest to find it... [pic heavy]

Quote:
Originally Posted by bloompyle View Post
The tunable is an Omni 532. I have three sources of 488nm. The single line (PSU malfunctioning), the ArKr (large to work with, taller than 532) and the 488nm OPSL that I got from Zach at SELEM. Not 100% on the magic behind OPSLs, so I was weary to use it as a guide and have that coupled output feed back into the optics.

Anyway; standing by for PMs.
The Protera is not a OPSL its a VECSEL

Here's some info on it
Mid page
Solid-State Lasers Are Gunning for Argon-Ion's Place | Features | Sep 2003 | Photonics Spectra

VECSELs Expand into New Applications | Features | Jan 2004 | Photonics Spectra
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