Title :
Highly Collimated Lasing Emission from a Peanut-Shaped Micro-Cavity
Author :
Xu, Lei ; Ling, Tao ; Shang, Lei ; Song, Qinghai ; Wang, Wencheng ; Liu, Liying ; Lee, Soo-Young ; Rim, Sunghwan ; Kim, Chil-Min
Author_Institution :
Dept. of Opt. Sci. & Eng., Fudan Univ., Shanghai
Abstract :
Highly collimated lasing from a series of peanut-shaped micro-cavities were observed. The lowest divergence is about 1.2deg which is as small as the pure diffraction divergence of a plane wave propagating through an opening of the cavity size. It is shown that the lensing effect of the circular boundary plays a crucial role in generating the highly collimated lasing emissions. From ray and wave dynamic analyses, we find that the peanut-shaped micro-cavity is optimal for the lasing emission of very narrow divergence
Keywords :
dye lasers; laser beams; light diffraction; microcavity lasers; ring lasers; solid lasers; stimulated emission; diffraction divergence; dye-doped microring cavities; highly collimated lasing; lasing emission; lensing effect; narrow divergence lasing; organic-inorganic hybrid glass materials; peanut-shaped microcavity; plane wave propagation; ray dynamic analyses; wave dynamic analyses; Biomedical optical imaging; Coatings; Optical collimators; Optical control; Optical devices; Optical filters; Optical materials; Optimized production technology; Resonance; Stimulated emission;
Conference_Titel :
Transparent Optical Networks, 2006 International Conference on
Conference_Location :
Nottingham
Print_ISBN :
1-4244-0235-2
Electronic_ISBN :
1-4244-0236-0
DOI :
10.1109/ICTON.2006.248225
