Unidirectional emission of high-Q scarred modes in a rounded D-shape microcavity
Autor: | Myung-Woon Kim, Chil-Min Kim, Ji-Won Lee, Kwang-Ryong Oh, Jinhyeok Ryu, Chang-Hwan Yi |
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Rok vydání: | 2019 |
Předmět: |
Diffraction
Physics Total internal reflection business.industry Physics::Optics Resonance 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics Semiconductor laser theory law.invention Semiconductor Optics law 0103 physical sciences D-Shape 010306 general physics 0210 nano-technology business Lasing threshold |
Zdroj: | Optics express. 26(26) |
ISSN: | 1094-4087 |
Popis: | We propose a deformed microcavity laser, where a high-Q mode group emits unidirectionally. The cavity comprises three circular arcs and one linear section. To minimize diffraction effects from the boundary, three circular arcs and one linear section are tangentially connected. By adjusting the sizes and the positions of the two sub-circular arcs, unidirectionality is maximized. In an experiment with an InP based InGaAsP semiconductor microcavity laser, a lasing mode group localized on aperiod-7 unstable periodic orbit emits unidirectionally. In our resonance calculation, a high-Q factor is confirmed. |
Databáze: | OpenAIRE |
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