Results 1 to 8 of 8

Thread: Looking for 457nm laser with coherence length > 50cm

  1. Default Looking for 457nm laser with coherence length > 50cm

    Hi,guys
    Is there anyone that I can get this type of laser as in the title?

    I am looking for it.

    Thanks for your help firstly.
    http://www.viasho.com
    wzc@viasho.com
    Whatsapp: +8613911142669

  2. #2
    Join Date
    Jan 2007
    Location
    Yorkshire, UK
    Posts
    4,557

    Default

    Hi Frank

    Are you wanting this for Holography?

    If so, you may get a better response posting this on the Holography forum...

    http://www.holographyforum.org

    I don't know of any DPSS or Diode lasers at 457nm, perhaps a gas laser with an etalon may be a possibility.

    Cheers

    Jem

  3. #3
    Join Date
    Oct 2006
    Location
    Central Florida
    Posts
    7,067

    Lightbulb

    Quote Originally Posted by Jem View Post
    I don't know of any DPSS or Diode lasers at 457nm, perhaps a gas laser with an etalon may be a possibility.

    Cheers

    Jem
    Actually there are 457nm dpss lasers. dave and aijii have several on thier site, but I am unsure of the specs. I think there is also a didoe capable of that wavelength but may be wrong...
    Love, peace, and grease,

    allthat... aka: aaron@pangolin

  4. #4
    Join Date
    Jan 2007
    Location
    Yorkshire, UK
    Posts
    4,557

    Default

    Oop's, you're correct. I stand corrected.

    Still I wouldn't like to guess at the stability/coherence length of them. A coherence length of >50cm is a tall order without a LOT of effort to stabilise the laser cavity. The Coherent C315m is a prime example of a long coherence length laser, that has lots of goodies controlling the temperature in order to get the required stability.

    Cheers

    Jem

  5. #5
    Join Date
    Nov 2005
    Location
    Melbourne, Australia
    Posts
    3,677

    Default

    Nichia make diodes that lase at 455nm also
    KVANT Australian projector sales
    https://www.facebook.com/kvantaus/

    Lasershowparts- Laser Parts at great prices
    https://www.facebook.com/lasershowparts/

  6. #6
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,488,214

    Default

    Dave;

    Are those 455, or 445 nm? I knew of the 445 nm units, but 455 is new. I'm assuming these are direct-injection blue diodes, right?

    I'll bet they're priced in the stratosphere though...

    Adam

  7. #7
    Join Date
    Nov 2005
    Location
    Melbourne, Australia
    Posts
    3,677

    Default

    opps, ur right buffo
    KVANT Australian projector sales
    https://www.facebook.com/kvantaus/

    Lasershowparts- Laser Parts at great prices
    https://www.facebook.com/lasershowparts/

  8. Default

    Thanks for all the informations.
    I will connact both dave and aijii to see whether they can help me.

    If any one gets news,please let me know.Send me a PM,thanks.
    http://www.viasho.com
    wzc@viasho.com
    Whatsapp: +8613911142669

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •