Title :
High Quality Direct Photo-Patterned Microdisk Lasers With Organic–Inorganic Hybrid Materials
Author :
Wu, Xiang ; Li, Hao ; Liu, Liying ; Xu, Lei
Author_Institution :
Fudan Univ., Shanghai
Abstract :
A direct photo-patterned microdisk-on-chip technique is used to fabricate 2-D microdisk lasers with various shapes. High-Q morphology-dependent resonances (including whispering gallery modes and four bouncing reflection modes) laser emissions from RhB-doped circular and square-shaped microdisks are observed. A thin polymer cladding on the microdisk is found to obviously smooth the disk sidewall. As a result, lowered lasing threshold, increased Q-value as high as 12000 and efficient suppression of h igh-order modes are realized. Lasing from square-shaped microcavities shows closed and open orbit resonances separately at different emission directions.
Keywords :
cladding techniques; microcavities; microdisc lasers; optical fabrication; organic-inorganic hybrid materials; whispering gallery modes; bouncing reflection modes; direct photo-patterned microdisk lasers; microcavities; open orbit resonances; organic-inorganic hybrid materials; thin polymer cladding; whispering gallery modes; Biomedical optical imaging; Laser modes; Microcavities; Optical filters; Optical materials; Optical refraction; Optical resonators; Optical variables control; Optical waveguides; Organic materials; Microdisk lasers; organic–inorganic hybrid materials; sol-gel processing; whispering gallery modes;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2007.910447
