Title :
Lasing on higher-order whispering gallery modes at room temperature
Author :
Chen, Chih-Yao ; Lin, YuanYao ; Cheng, Ching-Jen ; Lee, Tsin-Dong ; Lee, Ray-Kuang
Author_Institution :
Inst. of Photonics Technol., Nat. Tsing-Hua Univ., Hsinchu, Taiwan
Abstract :
We report a direct method to observe higher-order whispering gallery modes in vertical cavity surface emitting lasers (VCSELs) at room temperature. Instead of introducing any defect mode, we show that suppression of lower-order cavity modes can be achieved by destroying vertical reflectors with a surface micro-structure. Perfect whispering gallery modes with an azimuthal number as large as 41 are observed in experiments through collecting near-field radiation patterns, as well as in numerical simulations.
Keywords :
laser cavity resonators; laser modes; surface emitting lasers; whispering gallery modes; VCSEL; azimuthal number; higher-order whispering gallery modes; lower-order cavity mode suppression; near-field radiation pattern; surface microstructure; temperature 293 K to 298 K; vertical cavity surface emitting laser; vertical reflector; Laser modes; Optical filters; Optical resonators; Optical sensors; Optical surface waves; Photonic crystals; Temperature; Threshold current; Vertical cavity surface emitting lasers; Whispering gallery modes; (140.3948) Microcavity devices; (140.7260) Vertical cavity surface emitting lasers;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
