Page 1 of 2 12 LastLast
Results 1 to 10 of 15

Thread: Help ! Identify this laser please

  1. #1
    Join Date
    Jun 2009
    Posts
    22

    Default Help ! Identify this laser please

    hi there

    i have a laser that was removed from a laser eye surgery unit (keeler), i was wondering what the wavelength would be and the power of the unit.
    i have posted some photos,

    i was wondering how i would go about powering the unit (i did not remove it and the laser sergery unit has since been disposed of).

    I dont want to risk laser eye surgery myself, i was wondering if this laser would be of any use ? say as a pump diode for a big green ?
    Attached Thumbnails Attached Thumbnails PICT0042.JPG  

    PICT0043.JPG  


  2. #2
    Join Date
    Nov 2007
    Location
    Cairns, Australia
    Posts
    1,896

    Default

    Well by looking at the markings on the side of that one, 4A seems to be it's current, which would render it as a fairly high powered diode. If you have a current and voltage regulated PSU, start at 2V and slowly ramp it up, but dont pass 3V for now, and see if it does anything.

  3. #3
    Join Date
    May 2008
    Location
    Once it was called "Bel Paese" = ITALY
    Posts
    858

    Default

    it seems to be an infrared diode (and highly probably it is).
    Take a great attention for test! It surelly shoots out a respectable power!
    my webpage
    http://stevemilani.jimdo.com
    Skype ID: stevemilani957

    my RGB analogue projectors:
    3.9 W (640/532/445) 30kpps
    2.6 W (655/532/450) 30kpps
    2.5 W (638/532/450) 30kpps
    0.7 W (test unit)(635/532/473) 18kpps

  4. #4
    Join Date
    Jun 2008
    Location
    Yellowknife, NT, Canada
    Posts
    2,147,484,113

    Default

    Quote Originally Posted by Things View Post
    Well by looking at the markings on the side of that one, 4A seems to be it's current, which would render it as a fairly high powered diode. If you have a current and voltage regulated PSU, start at 2V and slowly ramp it up, but dont pass 3V for now, and see if it does anything.

    I wouldn't start at 2V, I'd start at 1.5V and see what you get, then you can determine weather or not it's IR or visible. If it's a red LD it'll need between 2.8-3.1V and if it's IR it'll want about 1.8-2.2V.

  5. #5
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
    Infinitus Excellentia Ion Laser Dominatus
    Join Date
    May 2007
    Location
    A lab with some dripping water on the floor.
    Posts
    10,031

    Default

    Keep in mind that LDs are constant current, not voltage driven devices, so you need something to limit the current to that diode or you will pop it.

    can you take a pic aimed down through the window with a magnifying glass in front of the camera, so we can see if its a diode or a self qswitched diode pumped yag in a can. Both are used for medical purposes.

    Steve
    Qui habet Christos, habet Vitam!
    I should have rented the space under my name for advertising.
    When I still could have...

  6. #6
    Join Date
    Mar 2008
    Location
    Canton, GA USA
    Posts
    384

    Default

    Quote Originally Posted by mixedgas
    so we can see if its a diode or a self qswitched diode pumped yag in a can

    Jesus H. Christ.

    Is there anyone else on the planet that can talk like that??

    I'm jiss sayin'...

  7. #7
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
    Infinitus Excellentia Ion Laser Dominatus
    Join Date
    May 2007
    Location
    A lab with some dripping water on the floor.
    Posts
    10,031

    Default

    Quote Originally Posted by trwalters001 View Post
    Jesus H. Christ.

    Is there anyone else on the planet that can talk like that??

    I'm jiss sayin'...

    Yes, wait till you meet Phil Hobbs. Google Phil Hobbs
    There are a lot of guys who do what I do.
    FrothyChimp comes to mind.

    you get: http://electrooptical.net/

    Then go to google books and read some of

    Building Electro-Optical Systems:,
    Making It All Work, Second Edition


    Steve
    Qui habet Christos, habet Vitam!
    I should have rented the space under my name for advertising.
    When I still could have...

  8. #8
    Join Date
    Jul 2008
    Location
    Marysville, WA
    Posts
    855

    Default

    they actually make q-switched YAG's in a can? Where do I sign up for a free sample?

  9. #9
    Join Date
    Jun 2009
    Posts
    22

    Default

    hi again

    i tested the diode using a reliable power supply that could deliver 2v at 4 amps,

    when i looked at the output it looked very dim to me (i thought it had "gone led" on me but then i took a photo using a digital camera
    Attached Thumbnails Attached Thumbnails PICT0044.JPG  


  10. #10
    Join Date
    Jun 2009
    Posts
    22

    Default

    ive been trying to take a close up photo of the diode itself but my digital camera is not upto it

Posting Permissions

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