Title :
Thickness dependent Q-spoiling in a thin dielectric coated cylindrical microcavity laser
Author_Institution :
Dept. of Opt. Eng., Sejong Univ., Seoul, South Korea
Abstract :
The effect of coating thickness on Q-spoiling was investigated by measuring lasing spectra from a dielectric inner-coated cylindrical capillary, filled with a gain-doped liquid. The lasing spectra showed a blue shift as the coating thickness decreased due to an enhanced Q-spoiling of whispering gallery modes (WGMs). Cavity quality factors Q´s were quantitatively estimated from the center wavelengths of lasing. WKB model was applied in order to explain the measured Q-spoiling.
Keywords :
microcavity lasers; whispering gallery modes; gain-doped liquid; thickness dependent Q-spoiling; thin dielectric coated cylindrical microcavity laser; whispering gallery modes; Coatings; Dielectric liquids; Dielectric measurements; Gain measurement; Laser modes; Microcavities; Q factor; Thickness measurement; Wavelength measurement; Whispering gallery modes; Q-spoiling; dielectric coating; photon tunneling; whispering gallery modes;
Conference_Titel :
Transparent Optical Networks (ICTON), 2010 12th International Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-7799-9
Electronic_ISBN :
978-1-4244-7797-5
DOI :
10.1109/ICTON.2010.5549308
