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Title: Mechanism of directional emission from a peanut-shaped microcavity

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.
Authors:
 [1] ;  [2] ; ;  [3] ;  [4]
  1. Department of Physics, Shangqiu Normal University, Shangqiu 476000 (China)
  2. (China)
  3. Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  4. State Key Lab for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
21546884
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 83; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.83.053835; (c) 2011 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ASYMMETRY; BEAMS; CAVITY RESONATORS; COLLIMATORS; EMISSION; MICROSTRUCTURE; SIMULATION; TRAJECTORIES ELECTRONIC EQUIPMENT; EQUIPMENT; RESONATORS