Old 02-08-2017, 04:44 PM #1
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Default SP 127b alive and well! :D

so, i've had this Spectra Physics 127b kicking around for a couple of years now, picked it up from an electronics junk yard for $20 but it didn't come with a PSU


well.... this little gem arrived this morning thanks to Sam and Phil


and as you can imagine, it did not take me long to.....


Tada! It's Alive! ALIVE!
beautiful beam as well, i'll try and get some beam shots tonight once it gets darker, but in the meantime, i has the warming glow of HeNe discharge to make me grin.


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Old 02-08-2017, 04:55 PM #2
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Default Re: SP 127b alive and well! :D

Sweet, Nice find! 20.00 can't beat that. Beam shots? Yep they work too ! Enjoy
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Old 02-08-2017, 08:59 PM #3
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Default Re: SP 127b alive and well! :D

and the spectral....

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Old 02-08-2017, 09:04 PM #4
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Default Re: SP 127b alive and well! :D

Nice find, Fritz. And kudos to Sam and Phil.
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Old 02-09-2017, 12:58 AM #5
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Default Re: SP 127b alive and well! :D

Quote:
Originally Posted by FRITZ HID View Post
and the spectral....

If only HeNe tubes would pump that kind of spectrum out of one end instead of from the sides of the tube.... Nice score for $20!
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Old 02-09-2017, 01:09 AM #6
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Default Re: SP 127b alive and well! :D

Quote:
Originally Posted by WizardG View Post
If only HeNe tubes would pump that kind of spectrum out of one end instead of from the sides of the tube.... Nice score for $20!
OMG I Know! I'd be crazy about a multiline HeNe like that! LOL
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Old 02-11-2017, 01:43 AM #7
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Default Re: SP 127b alive and well! :D

Very nice. Gotta love the 107/127 tubes. Technically yours is a 107b, I don't know why some of them are labeled as a 127...surplus stock or salvage perhaps... It is technically the same tube but the 127 is the fully enclosed version. What power? Is it a 25 or 35mW version? Although most of them do about the same power anyway I love mine. I've got some parts to make mine a tunable in theory.
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Old 02-11-2017, 02:02 AM #8
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Default Re: SP 127b alive and well! :D

Quote:
Originally Posted by ultimatekaiser View Post
Very nice. Gotta love the 107/127 tubes. Technically yours is a 107b, I don't know why some of them are labeled as a 127...surplus stock or salvage perhaps... It is technically the same tube but the 127 is the fully enclosed version. What power? Is it a 25 or 35mW version? Although most of them do about the same power anyway I love mine. I've got some parts to make mine a tunable in theory.


it's the 35mw, getting 39mw at 12.8ma but i've tuned it down to 11ma to try and get max life outta it.
i haven't decided what exactly to do with this one yet, i LOVE the open frame look so debating just mounting it on a wall somewhere and then bounce the beam around the house with maybe a spyro at the end, as a show piece. maybe someday when i have more room i'll dig into holography or something with it.
i'd love to go green with it but from what i understand, the length makes that very difficult/impossible. :/
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Old 02-11-2017, 03:07 AM #9
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Default Re: SP 127b alive and well! :D

I don't think you can get green with these. I have gotten red and orange, and I think Steve got some yellow but not very much. They're made for red. Rated current from SP was 11.5mA. I think mine does 43-ish last time I checked. It's pretty hard to keep these in perfect alignment because they're so long. Usually they're given an hour or two to warm up before use.
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Old 02-12-2017, 01:15 AM #10
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Default Re: SP 127b alive and well! :D

so, i've been re-delving into sams Faq on the whole hene section, and i'm debating on going yellow (i've always wanted a yellow laser) or possibly semi tunable (red oranges and yellow), since green is the hardest to get to lase....
thoughts?
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Old 02-12-2017, 01:30 AM #11
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Default Re: SP 127b alive and well! :D

Honestly they're not really good for much other than red And maybe orange without a gas change. Even then, you'd need custom mirrors to make it work well. If you have a littrow prism you could probably try making a tunable but it wouldn't be easy, and you'd still need a OC change to something appropriate. The stock one only reflects red well and a long enough curvature mirror would be big $$$
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Old 02-12-2017, 02:51 AM #12
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Default Re: SP 127b alive and well! :D

whats your definition of "$$$$$"? a few grand?
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Old 02-12-2017, 03:55 AM #13
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Default Re: SP 127b alive and well! :D

I'm not 100% sure and it would probably depend on where you got them from. But it wouldn't be cheap, most dielectric mirrors that are mass produced are at least $250...And a matching littrow would be a custom part and thus stupidly expensive probably...And that's to say nothing of the aligning of the thing afterwards-which I've done, and is not trivial...it is a royal pain to be avoided. I have a broadband HeNe OC that would work but I don't think the curvature is long enough. I haven't tried it yet.
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325nm: Omni 2056-M-A01 HeCd
375nm: Melles Griot RCS-007

405nm: Melles Griot RCS
430nm: Coherent D3 430-10
441.6nm: Omnichrome 2056-M-A01/4074-P-A03 HeCd laser
457.9nm: Uniphase 2214-40MLA Argon Ion Line

472nm Omni-643RYB Whitelight Line
473nm: CNI MGL-473-100, CNI GLP-473
476.5nm: Uniphase 2214-40MLA Argon Ion Line

483nm Omni-643RYB Whitelight Line
488nm: Uniphase 2214-40MLA Argon Ion Line, Spectra Physics >20mW Cyan DECSL Laser

496.5nm: Uniphase 2214-40MLA Argon Ion Line
501.7: Uniphase 2214-40MLA Argon Ion Line
514.5nm: Uniphase 2214-40MLA Argon Ion Line
520nm: Trustfire A8 Custom

532nm: CNI MGL-F-3W, 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
583.8nm
586.2nm
588.6nm: CNI PGL-M-80

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

604.6nm: LOR-150 HeNe line
609nm REO LHYR-250M HeNe line
611.8nm: Melles Griot LOR-150 HeNe (5mW), LOR-006 HeNe (0.5mW)

632.8nm: Spectra Physics Model-127 (>35mW), Model-124B, Model-120, Model-117, others
Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
647nm: Omni-643RYB Whitelight Line
659.3nm: Laser Quantum IGNIS 0.5W

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

1152.6nm: SP-120 HeNe alt. mirrors
1523.5nm: Melles Griot LIR-151 HeNe
3391nm: SP-124 alt. mirrors

Last edited by ultimatekaiser; 02-12-2017 at 03:56 AM.
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Old 02-12-2017, 06:27 PM #14
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Default Re: SP 127b alive and well! :D

well.... i like a challenge. lol
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Old 02-12-2017, 08:56 PM #15
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Default Re: SP 127b alive and well! :D

Yeah I had to do mine from scratch a few times it takes a while, even with a good alignment laser. Entire range of Lasing is like a tiny tiny tiny fraction of a turn of the nuts. Mine doesn't have the dance square mounts with the fine adjustment screws on it. Those are easier. Usually once it's all lined up though, the only thing you really have to maintain usually is the bore straightness (carefully). Thankfully you can remove the mirrors from these with a lot of care without having to adjust the alignment much. Just make sure to do the mirrors one at a time.

Realistically there's no reason to take them out though, they don't really ever get dirty as long as it still has the window covers. They seal pretty well, but tear a bit easily so it's best to leave it alone, lest you damage one or pop a window off or something. The 127 and 125 are the flagship king of the hill HeNe lasers, and are worth the price of a nice car in theory. By taking the mirrors out, you expose the windows to microdust automatically, as well as risk scratching and chipping the mirrors.

Glad you finally found a power supply to make this thing shine again
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325nm: Omni 2056-M-A01 HeCd
375nm: Melles Griot RCS-007

405nm: Melles Griot RCS
430nm: Coherent D3 430-10
441.6nm: Omnichrome 2056-M-A01/4074-P-A03 HeCd laser
457.9nm: Uniphase 2214-40MLA Argon Ion Line

472nm Omni-643RYB Whitelight Line
473nm: CNI MGL-473-100, CNI GLP-473
476.5nm: Uniphase 2214-40MLA Argon Ion Line

483nm Omni-643RYB Whitelight Line
488nm: Uniphase 2214-40MLA Argon Ion Line, Spectra Physics >20mW Cyan DECSL Laser

496.5nm: Uniphase 2214-40MLA Argon Ion Line
501.7: Uniphase 2214-40MLA Argon Ion Line
514.5nm: Uniphase 2214-40MLA Argon Ion Line
520nm: Trustfire A8 Custom

532nm: CNI MGL-F-3W, 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
583.8nm
586.2nm
588.6nm: CNI PGL-M-80

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

604.6nm: LOR-150 HeNe line
609nm REO LHYR-250M HeNe line
611.8nm: Melles Griot LOR-150 HeNe (5mW), LOR-006 HeNe (0.5mW)

632.8nm: Spectra Physics Model-127 (>35mW), Model-124B, Model-120, Model-117, others
Melles Griot LHB-580, LHB-190, WHR-570

641nm: Melles Griot RCS
647nm: Omni-643RYB Whitelight Line
659.3nm: Laser Quantum IGNIS 0.5W

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

1152.6nm: SP-120 HeNe alt. mirrors
1523.5nm: Melles Griot LIR-151 HeNe
3391nm: SP-124 alt. mirrors

Last edited by ultimatekaiser; 02-12-2017 at 09:06 PM.
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Old 02-12-2017, 09:06 PM #16
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Default Re: SP 127b alive and well! :D

yeah, they really are beautiful lasers. i love just turning it on and admiring the craftsmanship.
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