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Old 05-28-2013, 04:56 AM #33
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Default Re: REO Ohmeda Raman Gas Analyzer

Quote:
Originally Posted by bloompyle View Post
Tomorrow I'm going to make a big, comprehensive HeNe/Gas thread for myself with all of my current interesting gas units, as well as all future units and experimentation. Theory is that it'll be a good place to read on info, and get decent pics of some rarely seen wavelengths and lasers. Eventually this will be complimented with a better camera...Any ideas on the camera portion? I also have my new fog machine so some cool beamshots will be taken as well. Girls night out tomorrow so I have all the night to do this. Man time
Start a "Which Camera do you use?" thread. Some people here are pros.


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Old 05-28-2013, 05:02 AM #34
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Default Re: REO Ohmeda Raman Gas Analyzer

@BP: Wow, very nice laser. Also glad to see I'm not the only one that takes pics with feet in them.
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Old 05-30-2013, 04:12 AM #35
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Default Re: REO Ohmeda Raman Gas Analyzer

Quote:
Originally Posted by Sigurthr View Post
Iirc lower lines per millimeter will spread the beams more but produce less orders of beams.
You remembered backwards. More lines means more spread and fewer beams. 1000 lines/mm should be fine. They're like $2 shipped.
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Old 05-31-2013, 01:37 AM #36
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Default Re: REO Ohmeda Raman Gas Analyzer

Awesome, Bloompyle. I've been eyeballing one of these for a long, long while now - wondering what they'd actually produce. Didn't Sam have one with some sort of mirror selector on them that would allow beam selection?

I'm just wondering how possible this would be, to make this into something tunable...
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Old 05-31-2013, 02:41 AM #37
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Default Re: REO Ohmeda Raman Gas Analyzer

Quote:
Originally Posted by Cyparagon View Post
You remembered backwards. More lines means more spread and fewer beams. 1000 lines/mm should be fine. They're like $2 shipped.
Ah, thanks. I have bare sheets as they were cheap.
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Old 05-31-2013, 02:54 AM #38
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Default Re: REO Ohmeda Raman Gas Analyzer

He does have one, yes, though nothing was mentioned of it being tunable. I know he harvested a prism from one that allows the passing and splitting of all the WLs. Grabbed it from him to split the lines on mine.

I will definitely ask him about it though. Would be nice to do that to this as well as my other REO 3 line (594/604/612). Seen it yet? Will definitely look into it.

Don't want to deal with cheap film gratings, because as stated earlier, they don't pass too much of the light..
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Old 05-31-2013, 12:48 PM #39
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Default Re: REO Ohmeda Raman Gas Analyzer

@Aryntha:
Quote:
Originally Posted by Sam Goldwasser
>
I had several of these over the years:
Sam's Laser FAQ - Helium-Neon Lasers

Could be tuned between 633, 612, and sometimes 604 nm. But not Raman.

Get him to clarify.
Looks like the mistake was on my part. I believe this is actually a particle counter, not a gas analyzer. Will update if that is in fact the case.
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Old 06-13-2013, 03:53 AM #40
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Default Re: REO Ohmeda Raman Gas Analyzer

God, I'm so jealous. Where do you get all of your money?! I wish I could afford all of the HeNes you have >.> I just have a single lonely 543nm and then a lame little 633nm =[
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Old 06-13-2013, 11:26 AM #41
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Default Re: REO Ohmeda Raman Gas Analyzer

All of my HeNes cost less than your 589 PGL
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Old 06-13-2013, 01:05 PM #42
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Default Re: REO Ohmeda Raman Gas Analyzer

Really? All together? o.o Even the ones you bought from the other Sam? How do you manage to find such great deals?

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Old 06-13-2013, 03:38 PM #43
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Default Re: REO Ohmeda Raman Gas Analyzer

Not all together, oh no no no

Other Sam? Uncle Sam? No lasers from him

Sometimes you get lucky on fleebay.
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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
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532nm Various pointers
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568nm ~20mW ArKr whitelight line
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638nm 20mW single mode
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Old 06-13-2013, 04:31 PM #44
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Default Re: REO Ohmeda Raman Gas Analyzer

Other Sam because my name is Sam =p So he's always the other one. And that's less worrisome that each one is less than my PGL individually. That's still a lot of money though! D:
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Old 06-13-2013, 05:21 PM #45
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Default Re: REO Ohmeda Raman Gas Analyzer

LYR was $500, REO was $500 from Dave, the Raman was $125 on eBay.
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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 06-13-2013, 08:22 PM #46
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Default Re: REO Ohmeda Raman Gas Analyzer

That's... a bit too rich for my blood xD
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Old 06-13-2013, 10:02 PM #47
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Default Re: REO Ohmeda Raman Gas Analyzer

It IS pricey... Usually I work with him and make deposits per paycheck.

Either way, any questions on gas lasers, feel free to post here. Sig and I will try to answer them quickly.

To be honest, Sig knows more about the science on all other gas than I do. I know little about argon and HeCd and just about 0 on all other gas. My only gas focus is basically on HeNe.

Will have a ~20mW 633nm Uniphase 1145P to add here next month. I'm doing a bit more research on tunables before I dive into it, not something to play with without understanding. Sorry folks.

Too busy to research lately
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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

Last edited by bloompyle; 06-13-2013 at 10:03 PM.
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Old 07-14-2013, 01:42 AM #48
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Default Re: REO Ohmeda Raman Gas Analyzer

A pic I just took after warm up.



A video of a cold startup after over a month of inactivity, up shortly.

I forgot that it was a soft seal, so its startup worried me for a minute... But it's all good now

Took a dark shot, so that you can see the 640 line. Yes, that VERY faded circle between the 650 and the clump.


Same shot with some light. Some decent separation there.


Here I've got it going through a diffraction grating, then I took a good spread with some still decent output, passed it through a prism. Then took that spread, and passed it through a second prism. It was shining on my bed, at an angle. I took a blank strip of paper, and held it in the output. This is VERY faded, but you can see the 5 most prominent lines now, for the most part. My brain tricks me that the 640 is there, but good luck seeing it for yourself (and not hallucinating).


The things I do in the name of science My ghetto as hell setup. Ha. It works though. Biggest hurdle is that the tube is about 3in off the ground.

That's the laser, then a pair of diffraction glasses sitting on the laser's PSU. Then a spread is entering a large prism on top of a 9V battery. That spread is leading to a second, smaller prism. This prism is on 2 quarters, on a large mirror, on top of 2 other PSU's stacked. This is what I had to do to get that last shot for you. Enjoy, hope you get a kick out of it
__________________
"These things we do.
That others may live."

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

Last edited by bloompyle; 07-14-2013 at 02:35 AM.
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