1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Couple light into photonic crystal fiber

  1. Oct 5, 2011 #1
    I have one hollow core fiber, the core is around 20um, Numerical Aperture is
    0.03. The spot size of Ti:Sapphire laser is around 2~2.5mm. So I used focal
    length 50mm. But only very few power can be achieved (6uw). I wonder
    the reason. Could someone please give me some suggestions?
  2. jcsd
  3. Oct 11, 2011 #2
    Hi There,

    Maybe I can help you. Can you give a bit more information about the fiber you have? A 20µm core for a 800nm range hollow-core fibers sounds very big. Do you know if this is a 7 or a 19 cell design?

    /Kim Hansen, NKT Photonics
  4. Oct 11, 2011 #3
    Actually, I do not think it belongs to 7 or 19 cell design. :frown: It is made by some other research group.
  5. Oct 12, 2011 #4
    No worries. We would be happy to help even if the fiber is not made by us. Do you have a picture of the cross section of the fiber? Also, do you know what the loss in the fiber is at your laser wavelength?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook