近年来半导体激光器(LD)的应用和性能的提高令人注目。目前激光器行业中,多数产品都是半导体激光器,其以效率高,结构紧凑寿命长等独特的优点在光通信,国防及医疗等方面得到了极其广泛的应用,并且随着激光器件技术的发展,大功率半导体激光器将逐步成为光通信,激光器泵浦等应用中的 In recent years, the application and performance improvement of semiconductor lasers (LDs) have been remarkable. At present, most of the products in the laser industry are semiconductor lasers. Due to their unique advantages of high efficiency, compact structure and long service life, they have been widely used in optical communications, defense and medical fields. With the development of laser device technology, High-power semiconductor lasers will gradually become applications such as optical communications and laser pumping