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Thread: Experiences with 808nm CS-Mount Arrays from Ebay

  1. #1
    Join Date
    Feb 2014
    Location
    Germany, Heidelberg
    Posts
    4

    Default Experiences with 808nm CS-Mount Arrays from Ebay

    Hello all,

    I'm currently trying to build a selfmade dpss laser from scratch. I've got the crystal, appropriate optics, some low (~4W) power pump diodes and already achieved first light.
    I did the maths (according to Koechner) and want to use a higher power pump diode for achieving maximum efficiency, which would be one single 40W CS-Mount diode.

    I understand that junktronix has got one for offer (http://www.ebay.com/itm/111192372990) and that he is top notch at selling surplus laser equipment.

    But with my small student budget, 200+$ plus shipping and customs (to germany) is a bit hefty.

    Does anyone have any experience with the 80-100$ 40W bars on ebay (i.e. http://www.ebay.com/itm/141784961143) ?

    Especially concerning actual remaining output power at the current they used to supply 40W when new, any dead emitters and remaining lifetime?

    Best regards and greetings

  2. #2
    Join Date
    Aug 2005
    Location
    Silicon Valley
    Posts
    442

    Default

    Most of the low price 40W bars on eBay are my rejects - they are low power / have physical defects / terrible spectrum, etc. I only keep the very best units to sell. Send me an email (look at the bottom of any of my ebay listings) and I'll find something you can use at a price you can afford.

  3. #3
    Join Date
    Jul 2010
    Location
    Netherlands
    Posts
    3,297

    Default

    40watts is a lot of power even a 4W pump diode is. What will you be using the end resulting dpss laser for?

  4. #4
    Join Date
    Feb 2014
    Location
    Germany, Heidelberg
    Posts
    4

    Default

    The dpss laser will of course not be used for show purposes. I have not yet decided the definite usage of my system, but I want to conduct various physical experiments using non-linear materials, and perhaps use it one day to pump a Ti-Sapphire oscillator.

    Another option would be 3d-printing, as you can achieve a higher accuracy and use more materials when fusing powders with a laser than plastic fused deposition modelling (FDM).

    All these applications require a lot of power and careful design.

    Thank you very much for this offer junktronix, I will definitely come back at it.

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