Volume Bragg gratings in high power laser applications
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摘要: 记录在光热敏微晶玻璃(PTR)中的体Bragg衍射器件具有高衍射效率、可选择的角度和波长选择特性以及高损伤阈值等优点,成为先进激光技术发展中的一种新兴器件。综述了目前各型体Bragg衍射器件在激光技术中的应用,主要包括角选择近场滤波技术、光谱合成技术、外腔半导体稳频技术以及啁啾脉冲压缩与展宽技术。详细地阐述和分析了这些方法的原理、特点、适用范围以及它们的研究现状。Abstract: Advanced laser systems with high power, good beam quality and strong stability are always the research objectives. Volume Bragg diffractive elements recorded in photo-thermo-refractive glass have become one of the keys to the advanced laser technology development owing to their excellent optical property and diffractive ability. A detailed introduction to the applications and principles in the advanced laser technology with volume Bragg elements of different structures, including near-field filtering, spectral combining, semiconductor external-cavity spectral stabilization and chirped pulse broadening and compression, is presented. Key words:
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