Titanium-doped sputter-deposited AlN infrared whispering gallery mode microlaser on Optical fibers

Academic Article


  • Optical fibers of 12 μm diameter were coated with a sputter-deposited layer (4 μm thick) of titanium (1 at: %)-doped amorphous aluminum nitride. When optically pumped by an Nd:YAG green laser at 532 nm, laser action was observed in whispering gallery modes around the fiber (in a ring shape) at 780.5 nm with a quality factor Q > 1500. Other modes were also observed between 775 and 800 nm. The primary and secondary modes give a mode separation of 4.6 nm. No waveguide modes were observed in the cavity. © 2010 Optical Society of America.
  • Published In

  • Optics Letters  Journal
  • Digital Object Identifier (doi)

    Author List

  • Maqbool M; Main K; Kordesch M
  • Start Page

  • 3637
  • End Page

  • 3639
  • Volume

  • 35
  • Issue

  • 21