Collimated directional emission from a peanut-shaped microresonator

Details Collimated directional emission from a peanut-shaped microresonator Collimated directional emission from a peanut-shaped microresonator

2011-02-17

arxiv.org/abs/1102.3482v1

Physics

Optics

Scientific paper

10.1103/PhysRevA.83.053835

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.

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