Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Input light signal for laser

  1. Dec 8, 2012 #1
    hi , does input light signal for laser amplification has to be provided by the external source or it is created by lasing material itself?
     
  2. jcsd
  3. Dec 8, 2012 #2
    Every laser starts from the background signal given by spontaneous emission.
     
  4. Dec 8, 2012 #3

    Cthugha

    User Avatar
    Science Advisor

    You can also seed one laser with a different laser as is typical for tunable lasers like Ti:Sapph.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Input light signal for laser
Loading...