Strongly enhanced mode selection in a thin dielectric-coated layered microcavity laser.
Strong mode selection through an enhanced interferential coupling effect was observed in a thin dielectric-coated layered cylindrical microcavity laser. The strong coupling effect was induced owing to an enhanced reflectivity of around 50% at the dielectric-coated inner boundary of a fused silica capillary filled with a dye-doped liquid. At an optimized coating thickness of about 0.4 microm, the lasing peaks appeared only at the wavelengths corresponding to the constructive interference condition, whereas those from a bare capillary were weakly modulated.
Moon
Hee-Jong
HJ
Department of Optical Engineering, Sejong University, Seoul, Korea. hjmoon@sejong.ac.kr
Kang
Dong-Yun
DY