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首页> 外文期刊>Applied optics >Quasi-Gaussian output from dual case I waveguide resonators with mirrors of step-index reflectivity profiles
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Quasi-Gaussian output from dual case I waveguide resonators with mirrors of step-index reflectivity profiles

机译：带有阶跃折射率反射镜的双壳体I波导谐振器的准高斯输出

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摘要

There are three recognized low-loss configurations for waveguide laser resonators in which the waveguide is either closed at each end by a plane mirror (dual case I design) or one of the plane mirrors is replaced by a curved mirror at some distance from the guide exit. Some time ago, a variant of the latter design was proposed by exploiting the self-imaging properties of multimode waveguides. The resonator was predicted to produce a TEM_(00)-like output with very low round-trip loss and excellent mode discrimination even though the curved mirror was placed much nearer to the guide exit (making the resonator more compact) than was conventional for achieving those results. In the present work, we show that the desirable features of the above design can be achieved even in a dual case I configuration by using end mirrors with suitable reflectivity profiles. Since there is no free space region between the waveguide and the mirrors, the resonator will have the additional advantages of being compact and portable. Furthermore, the absence of curved mirrors will also facilitate its realization in semiconductor integrated optics technology.
机译：对于波导激光谐振器，存在三种公认的低损耗配置，其中，波导在两端均被平面镜封闭（双重情况I设计），或者其中一个平面镜被离波导一定距离的曲面镜代替。出口。前一段时间，通过利用多模波导的自成像特性，提出了后者设计的一种变体。预测谐振器将产生类似于TEM_（00）的输出，具有非常低的往返损耗和出色的模式辨别力，即使将曲面镜放置在比引导出口更近的位置（使谐振器更紧凑）​​也是如此。这些结果。在当前的工作中，我们表明即使在双重情况I配置中，也可以通过使用具有适当反射率轮廓的端镜来实现上述设计的理想功能。由于在波导和反射镜之间没有自由空间区域，所以谐振器将具有紧凑和便携的附加优点。此外，不存在曲面镜也将有助于其在半导体集成光学技术中的实现。

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