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Collimated directional emission from a peanut-shaped microresonator

By Fang-Jie Shu, Chang-Ling Zou, Fang-Wen Sun and Yun-Feng Xiao

Abstract

Collimated directional emission is essentially required an asymmetric resonant cavity. In this paper, we theoretically investigate a type of peanut-shaped microcavity which can support highly directional emission with the emission divergence as small as 2.5o. The mechanism of the collimated emission is explained with the short-term ray trajectory and the intuitive lens model in detail. Wave simulation also confirms these results. This extremely narrow divergence of the emission holds a great potential in highly collimated lasing from on-chip microcavities

Topics: Physics - Optics
Year: 2011
DOI identifier: 10.1103/PhysRevA.83.053835
OAI identifier: oai:arXiv.org:1102.3482
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