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Thread: SEXY BLUE NDS4216 488nm 200mW 5.6mm Single mode, small stripe and low mrad.

  1. #11
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  2. #12
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    EEEK!!!! Is the lasing medium made from diamonds??

  3. #13
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    That's the 60mW one. Thorlabs charges exorbitant prices on all their diodes. They want $380.00 for a single Mitsu G71 diode lol . I'm sure that the 200mW 488nm one could be found somewhere else possibly for cheaper .. maybe ..
    Last edited by steve-o; 06-01-2013 at 16:39.

  4. #14
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    EEEK!!!! Is the lasing medium made from diamonds??
    Actually, CVD diamond is not very expensive and there some really neat things you can do with diamonds and lasers. I think the most telling is that the G71s from DTR look new and cost approx $50. I doubt Throrlabs has fewer sources that Jordan.

  5. #15
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    Well, OPSL based 488nm modules have by far a more interesting power/price ratio

  6. #16
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    Anyone want to try to build a 488 OPSL yourself ? .. here's 1. Someone's already figured it all out in advance too :]

    Click image for larger version. 

Name:	coherent 488 OPSL.jpg 
Views:	98 
Size:	276.7 KB 
ID:	38529
    (Courtesy of Sam's FAQ)

  7. #17
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    Quote Originally Posted by steve-o View Post
    Anyone want to try to build a 488 OPSL yourself ? .. here's 1. Someone's already figured it all out in advance too :]

    Click image for larger version. 

Name:	coherent 488 OPSL.jpg 
Views:	98 
Size:	276.7 KB 
ID:	38529
    (Courtesy of Sam's FAQ)
    Just wondering, why is it that opsl has allegedly superior modulation specs, when I can see nothing particular exiting in the shg stage ?

  8. #18
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    good point. how is opsl according to this any different than dpss. Still has a pump diode, still has a non linear optic, don't see temp compensation though maybe that is it? IE no temp knee from power heating effects? I would not want to align one of those. It looks like a mess.

  9. #19
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    Yeh TEC or heater under the whole thing is says (I think, it's a little unclear) . There are also 3 control boards not in the pic. The read in Sam's is here (not a long article, just a few paragraphs) explains it all , sorta ..

    http://www.repairfaq.org/sam/laserdio.htm#dioopsl

    If this is a 488-20, that's 20mw .. Think I'll wait for the 200mw dir-inj diode ..
    Last edited by steve-o; 06-02-2013 at 16:44.

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