Compact High Brightness Semiconductor Lasers Using Waveguide Grating Mirror

本提案寻求一种新的方法来改善大体积激光源的空间相干性，以及几个激光器输出的相干组合问题。这种方法是基于使用导模光栅共振。这个项目的一个基本方面是研究激光谐振器中的模式竞争，其中包含一个新元件：波导光栅反射镜。这种方法适用于不同种类的激光器，但在半导体激光器的情况下是最有利的。我们期望将亮度和高功率半导体激光器提高60到100倍。潜在的应用包括半导体泵浦激光器、用于切割和焊接的工业激光器、激光雷达和垂直腔面发射激光器。

This proposal seeks a new approach to the problem of improving spatial coherency inlarge volume laser sources, and of coherent combination of the outputs of several lasers.This approach is based on using guided mode grating resonances. A fundamental aspectof this project is the study of mode competition in a laser resonator that contains a newelement: a waveguide grating mirror. This approach is applicable to different kinds oflasers, but it is most advantageous in the case of semiconductor lasers.We expect to improve brightness and high-power semiconductor lasers by a factorof 60 to 100. Potential applications include semiconductor pump lasers, industrial lasersfor cutting and welding, lidars, and vertical cavity surface emitting lasers.