Mechanism of directional emission from a peanut-shaped microcavity
Journal Article
·
· Physical Review. A
- Department of Physics, Shangqiu Normal University, Shangqiu 476000 (China)
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026 (China)
- State Key Lab for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 (China)
Collimated directional emission is essentially required for an asymmetric resonant cavity. In this paper, we theoretically investigate a type of peanut-shaped microcavity which can support highly directional emission with a beam divergence as small as 2.5 deg. The mechanism of the collimated emission of this type of peanut-shaped microcavity is explained with a short-term ray trajectory. Moreover, the explanations are also confirmed by a numerical wave simulation. This extremely narrow divergence of the emission holds great potential in highly collimated lasing from on-chip microcavities.
- OSTI ID:
- 21546884
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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