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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 31, Iss. 18 — Sep. 15, 2013
  • pp: 2994–2998

An Optimization Method of Asymmetric Resonant Cavities for Unidirectional Emission

Fang-Jie Shu, Chang-Ling Zou, and Fang-Wen Sun

Journal of Lightwave Technology, Vol. 31, Issue 18, pp. 2994-2998 (2013)


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Abstract

In this paper, we proposed a useful algorithm to optimize the shape of asymmetric resonant cavities (ARCs). At first, we studied the repeatability and accuracy of the ray simulation on one kind of ARCs (half-quadrupole-half-circle shaped cavity), and confirmed the robustness of the directionality under shape errors. Based on these, we proposed a hill-climbing algorithm to optimize the ARCs for unidirectional emission. Different evaluation functions of directionality were tested and we suggested using the function of energy contained in a certain angle for highly collimated and unidirectional emission. By this method, we optimized the ARCs to obtain about 0.46 of the total radiated energy in divergence angle of 40° in the far field. This optimization method is very powerful for the shape engineering of ARCs and could be applied in future studies of ARCs with specific emission properties.

© 2013 IEEE

Citation
Fang-Jie Shu, Chang-Ling Zou, and Fang-Wen Sun, "An Optimization Method of Asymmetric Resonant Cavities for Unidirectional Emission," J. Lightwave Technol. 31, 2994-2998 (2013)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-31-18-2994

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