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Thread: What's difference 635nm, 637nm, 638nm, 640nm?

  1. #21
    Join Date
    Jun 2011
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    GuangZhou, China
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    What I mean is when they shoot on the wall and what they look like.
    If this is ludicrous, could you please tell me what they look like?
    All in 1W power.

    Eager to know.


    Quote Originally Posted by danielbriggs View Post
    This is ludicrous...
    The wavelength alone does not determine the beam propagation.
    The specific laser used, and hence it's resonator, does; obviously.
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  2. #22
    Join Date
    Feb 2008
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    East Sussex, England
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    What I mean is when they shoot on the wall and what they look like.
    If this is ludicrous, could you please tell me what they look like?
    All in 1W power.

    Eager to know.
    Song, what you are describing is simply a result of how the modules are built, not to do with the actual emitter/source.
    And modules can be built many different ways.

    So when you say '638nm, it looks like a cross, Div. is smaller than 635', I could show you a 638nm module with 1W that look like a tight square. I could also make it with higher divergence than 635nm (by having very small diameter at aperture for example), but that would not be logical to do in most circumstances.

    You seem to be describing a module using a PBS cube, without waveplates, which gives the cross shape. But if you built same module using PBS cube and waveplate, or using knife edge arrangement, you wouldn't get a cross.
    Frikkin Lasers
    http://www.frikkinlasers.co.uk

    You are using Bonetti's defense against me, ah?

    I thought it fitting, considering the rocky terrain.

  3. #23
    Join Date
    Jan 2007
    Location
    Peking
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    1,207

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    We had booth during PALME, we will had different color, power, and divergence products there.
    To those who mark their red is <1mrad, <0.8mrad, <0.7mrad, we mark our 637nm red is <2mrad, who would like compare? .
    we can do compare pictures like this:
    Attached Thumbnails Attached Thumbnails 20140227_113658.jpg  

    20140227_112837.jpg  

    Laser-wave can supply:
    Green 532nm, 4W, 10W, 15W
    blue 445nm, 2W, 3.5W, 6W, 10W
    blue 462nm, 2W
    Red 638nm, 500mW, 1W,2W, 4W, 5W, 6W, 8W, 10W
    All diodes, All optics, All mount, All laser base and housing for yourselves building lasers.
    Speical products, 532nm, OEM-V-SS, 4W, 98mm*46mm*48mm; OEM-H, 10W, 250mm*88mm*70mm
    www.laser-wave.com or www.laser-wave.net
    bridge@laser-wave.com or 463366312@qq.com
    We Chat: 463366312, Laserwave-Bridge

  4. #24
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    Jun 2011
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    GuangZhou, China
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    Quote Originally Posted by norty303 View Post
    And modules can be built many different ways.
    Thank you! I learned from this.
    L.A.S.E.R.
    Light Amplification by Stimulated Emission of Radiation

    Laser system: Pure Diode 3W & 6W RGB Laser.



    www.facebook.com/saifer.sy
    www.laser-viva.com

  5. #25
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    Mar 2011
    Location
    Chicago area, IL
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    Thank you guys for the pictures and clarification ....

  6. #26
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    Apr 2013
    Location
    Brisbane, Australia
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    Hmm... You normally wouldn't expect an employee of a laser company to succumb to confusion so readily. The difference is negligible anyway.
    Last edited by Dylan; 04-01-2014 at 15:02. Reason: Silly spelling
    OzLasers - Green Laser Pointers Australia
    Australian supplier of legal laser pointers, diodes, safety gear and more.

  7. #27
    Join Date
    Mar 2014
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    4pcs 635nm-5W RGB order will be installed this week, when we finish them, I will take the pictures for everyone. The new 635nm-CNI diode, beam diameter 2.9x3.8mm,<1.5mrad full angle.

  8. #28
    Join Date
    Mar 2014
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    If you also need 635nm5W RGB(R:1W/635nm, G:2W/532nm, B:2W/445nm), pls feel free to contact us sales@able-laser.com, the detail and quotation will be offered to your e-mail. this is with FDA approved, 100% FDA standards.

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