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首页> 外文期刊>Applied optics >Vertical surface emitting open coupled-cavities based on photonic crystal surface modes
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Vertical surface emitting open coupled-cavities based on photonic crystal surface modes

机译：基于光子晶体表面模式的垂直表面发射开放耦合腔

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摘要

Two types of vertical surface emitting photonic crystal cavities based on beaming mechanism and coupled surface modes are studied. It is shown that vertical emission with a zero divergence angle and a high quality factor can be easily achieved by the back-to-back cavity design. The periodic modulation to the cavity surface alters nonradiative surface modes into radiative surface modes, and the constructive interference of the radiative waves gives rise to vertical emission and improves the quality of the output beam. A high quality factor can be attributed to the nonradiative surface mode on the cavity back whose small part of energy can be transferred into the cavity surface by coupling. The resonant property and the coupling efficiency of the cavities are investigated and optimal cavity configurations are obtained. These open coupled-cavities are good candidates of highly directional light sources. 02008 Optical Society of America.
机译：研究了基于束流机制和耦合表面模式的两种垂直表面发射光子晶体腔。结果表明，背靠背腔设计可轻松实现零发散角和高品质因数的垂直发射。对腔体表面的周期性调制将非辐射表面模式更改为辐射表面模式，并且辐射波的相长干涉会产生垂直发射并提高输出光束的质量。高品质因数可归因于腔体背面的非辐射表面模式，其小部分能量可以通过耦合传递到腔体表面。研究了谐振腔的谐振特性和耦合效率，并获得了最佳的谐振腔配置。这些开放的耦合腔是高度定向光源的理想选择。 02008美国光学学会。

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