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Thread: Measure beam profiles?

  1. #41
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    Default Might be useful, Might not...

    http://cgi.ebay.com/LOT-THORLABS-DET...mZ160365377498

    I don't know if any of that would be useful. I couldn't get all the images to enlarge so .

    -Adam
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    Laser (the acronym derived from Light Amplification by Stimulated Emissions of Radiation) is a spectacular manifestation of this process. It is a source which emits a kind of light of unrivaled purity and intensity not found in any of the previously known sources of radiation. - Lasers & Non-Linear Optics, B.B. Laud.

  2. #42
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    Default

    How much mW/cm2 power can a standard b/w CCD handle before it dies?

    Can I also use safety goggles as a attenuator?

    I'm testing the software with a lens in front of the CCD
    Attached Thumbnails Attached Thumbnails profiler.jpg  


  3. #43
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    mixedgas is offline Creaky Old Award Winning Bastard Technologist
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    Default

    Quote Originally Posted by mccarrot View Post
    How much mW/cm2 power can a standard b/w CCD handle before it dies?

    Can I also use safety goggles as a attenuator?

    I'm testing the software with a lens in front of the CCD

    I've had 20mW on silicon ccds no problem. Vidicon tubes, however, don't like more then 5 mW before they discolor.

    we did some testing at Dr Lavas:

    430 nm pointer to excite (60 mW)
    808 pointer (1W) to quench:

    Phosphor:
    ZnS:AG (Post Apple Scientific, 19.95 a bottle ) IR Quench, YES
    Chinese Long Persistence Blue (SR:YAG) IR Quench, YES
    Chinese medium persistence Red ( ??:YAG) IR QUench, YES
    United Nuclear, Super Phosphor , NO QUENCH !

    Procedure:
    Darkened room, excite with 430, remove excitation, wait a few seconds, attempt quench. No attempt was made to quench and excite at the same time.

    Steve
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