高功率半导体激光抽运碱金属蒸汽激光器

随着半导体抽运固体激光器向更高的输出功率发展，固体激光工作物质的热效应问题成了该类器件发展的瓶颈，人们开始尝试用高功率半导体激光抽运气体工作物质来代替固体工作物质以实现良好的热管理。半导体抽运碱金属蒸汽激光器（DPAL）结合半导体激光高功率、高效率抽运和气体激光介质良好的热管理和光学特性，以及碱金属原子D线激光跃迁的高量子效率（99%）等优越性，有可能实现好的光束质量（近衍射极限）、高效率（斜率效率大于80%）、高平均功率的近红外激光，在定向能量传输、国防军事、激光钻油气井和激光工业加工等领域具有极好的应用前景。综述了DPAL激光器的工作原理、关键技术、最新研究进展和它的应用前景。

High-Power Laser Diode-pumped Alkali Metal Vapor Laser

As the development of high-power diode-pumped solid state laser (DPSSL), thermal effects in the solid state laser media have become a bottleneck of the laser development Therefore, attempts to develop diode-pumped gas laser are conducted, to achieve more efficient thermal management Laser diode-pumped alkali laser ( DPAL ), a new high -power laser, combines some advantages such as high power, efficient diode -pumping, good thermal management and optical properties in gas media, and high quantum efficiency (-99%) for D transition of the alkali metal atoms. It is expected to realize high-average-power laser with good beam quality (near-diffraction-limited) and high efficiency (slope efficiency>80%), which can find a lot of applications in power beaming, military, drilling oil and gas wells and laser material processing. The principle, technology, new development and applications of DPAL are described.