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Thread: DPSS deveation

  1. #1
    Join Date
    Nov 2014
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    mid michigan
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    792

    Default DPSS deveation

    I have a question on the acceptable deviation on a typical 532nm DPSS type laser, my thoughts have always been plus or minus of about 2nm and what spawned this flowing thought train in my chaotic reptilian brain is seeing vendors on flea bay advertising a c-mount at 808nm but the spec sheet showing 805nm plus or minus 3-5 nm but still listing it as 808nm, my reptilian brain is coaxing me to hunt down and eat the sellers of these deceptive advertisements but does raise a real question, what is the variance for the crystal pair in a typical DPSS green laser.

    I only use the ones claimed to be 808nm center wavelength, at the typical room temps (yes i know being a dragon my room temp may be thought of to be higher then that of the human species but in reality it is the same)
    Last edited by Draco; 08-22-2015 at 03:24. Reason: some spelling
    Polk SDA SRS, Parasound HCA 3500, Luxman M117, Onkyo 504, 7.62X39, sometimes a ball on a string is the greatest of toys for us nonhuman types. oh and some lasers, lots of lasers

  2. #2
    Join Date
    Feb 2011
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    New Hampshire
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    3,513

    Default

    The acceptance of the YAG or vanadate is pretty broad:

    http://www.northropgrumman.com/Busin...Neodymium.aspx

    But the depth of penetration of the diode pump light will depend where you are at in this curve. The 808nm diodes are highly tune-able, thermally. Any single one will work if you mount it on a TEC and adjust its temp to produce the best 1064nm power and beam profile. Expect .25nm/C.

  3. #3
    Join Date
    Nov 2014
    Location
    mid michigan
    Posts
    792

    Default

    Thank you for the info
    Polk SDA SRS, Parasound HCA 3500, Luxman M117, Onkyo 504, 7.62X39, sometimes a ball on a string is the greatest of toys for us nonhuman types. oh and some lasers, lots of lasers

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