期刊
OPTICS LETTERS
卷 34, 期 2, 页码 163-165出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.34.000163
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资金
- German Research Foundation (DFG) [FG 760]
- Korean government (MOEHRD) [KRF-2006-352C00022]
The availability of microlasers with highly directional far-field characteristics is crucial for future applications. To this end we study the far-field emission of active microcavities with a spiral shape using the Schrodinger-Bloch model. We find that they can provide directional emission under the conditions of (i) pumping along the resonator boundary and (ii) for specific resonator geometiies. We systematically study the far-field characteristics under variation of the pumped area and the cavity geometry and identify a directionality optimized regime. Our results consistently explain previously obtained experimental results. (C) 2009 Optical Society of America
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