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Old 08-07-2017, 07:06 AM #145
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Default Re: Optotronics RPL-II 532 nm +1400 mW - opinions and experience?

Quote:
Originally Posted by Alaskan View Post
I love low divergence, bought two of those special optics expanders, one at 20X, the other at 160X.... but it has a six inch output lens, so the input on the 160X cannot be more than about 1 mm. Because of that, it wouldn't work with that laser pointer very well, but the 20X one can take a large diameter input beam with its 6 inch output collimation lens.

To find a high quality beam expander for 532nm on ebay, search for a 1064 nm IR expander, they work at 532 nm too.
I'd like to see what your 20X could do with a corrected 44 ?


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Old 08-07-2017, 07:26 AM #146
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Default Re: Optotronics RPL-II 532 nm +1400 mW - opinions and experience?

I am highjacking Radim's thread at this rate, I'm bowing out, but yes, I'd like that too, except two combined PBS NUBM44's.
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Old 08-07-2017, 05:55 PM #147
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Default Re: Optotronics RPL-II 532 nm +1400 mW - opinions and experience?

Edmunds makes many coatings, but the Yttrium Aluminum Garnet- Broad Band Anti Reflective coating is not a dual one as far as i know.
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Old 08-07-2017, 08:43 PM #148
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Default Re: Optotronics RPL-II 532 nm +1400 mW - opinions and experience?

Is this an expander coating for YAG? I see lots of different coatings on their web site, but many of them made for 1064 nm have some curves which allow them to be used in the VIS, at some wavelengths not optimal, but usable, better than without:

http://imgur.com/a/NERpA - this graph from Edmund Optics;



Look at that one near infrared coating curve which dips low at both 532 and 1064 nm, that's what I'm talking about.

I bought some IR beam expanders for 1064 nm, not 532 nm, but when I later came across some 1064 nm infrared expanders which had a slash 532 nm marked on them I measured the loss through one of mine at 532 and it worked, low loss.

If you see a beam expander on ebay for 1064 nm, I wouldn't necessarily expect it is good at 532, but my bet is more often than not it will be. I Don't buy guessing, I get the part number and try to find specs.
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Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

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Last edited by Alaskan; 08-07-2017 at 09:36 PM.
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Old 08-07-2017, 09:38 PM #149
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Default Re: Optotronics RPL-II 532 nm +1400 mW - opinions and experience?

Yeah, Chris. the YAG-BBAR coating is in the second graph. It has dips at 532nm and 1064nm. It is the red one in the graph.
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520nm LaserLands pointer Measures 510nm
532nm LSR532H-1W Laser, LSR-PS-N1 Driver, RS-75-5 P.S. 1300 mW
532nm 200mW Thermostatically Controlled Fan Cooled (Besram) >230mW
532nm 189mW pocket lab laser
532nm lasers X6 100mW-200mW
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632.8nm P210 New Laser Tube 0.57mW Melles Griot 05-LMP-827-037 PS
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635nm 1 watt Cyprus II
635nm 1 watt SMP Copper host
635nm 5mW pointer
635nm 100mW pointer
635nm Lifetime17 Mini-camo build 687mW
650nm 65mW pointer
650nm 380mW 501B
808nm 1+W infrared laser
infrared video camera for collimating IR lasers
Ocean Optics USB2000 Spectrometer
Scientech Vector S310 with AC2500 10 Watt LPM
LaserBee II 3.2 Watt LPM
Radiant X4 3.7 Watt LPM

Last edited by paul1598419; 08-07-2017 at 09:51 PM.
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Old 08-07-2017, 09:44 PM #150
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Default Re: Optotronics RPL-II 532 nm +1400 mW - opinions and experience?

Wasn't tracking well, got it. BBAR is a search term I use a lot on ebay when looking for lenses, hard to find though. I don't know why I had a hard time clueing in we are talking about the same thing

edit; i've seen V-coat curves which aren't good at both 532 and 1064 nm, but this BBAR curve dips at both.
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To shorten my signature I have moved most of my laser related web links to this forum page, the second post in that thread shows most of my builds... Alaskan's Laser Links: http://laserpointerforums.com/f44/al...ml#post1449395


Sincerely investigate any of these three short quotes as new concepts and you've taken your first step into a larger world:

"I regard consciousness as fundamental. I regard matter as derivative from consciousness..." - Max Planck. "Everything we call real is made of things that cannot be regarded as real" - Neils Bohr. "What we call physical things and events do not exist independently of subjective experience..." - Deepak Chopra.

Each of these three rabbit holes go deep, ending up in the same place.

Useless troll fighting.
.........................
PhotoB****t high jacking you too? Use this link instead:
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High resolution of my avatar: https://ibb.co/fWOhXF

Last edited by Alaskan; 08-07-2017 at 09:48 PM.
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