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半导体激光抽运碱金属蒸汽激光器(DPAL),可以提供高功率、高效率、近衍射极限的近红外连续激光输出,具有较其它传统高功率激光器更好的综合性能。其发射波长近大气传输窗口,且与半导体光电转换器件的高效吸收波长吻合,因此以DPAL为光源的太空激光传能系统在航空航天领域中具有很好的应用前景。首先概述DPAL的基本原理和结构,并对其作为能源用于同步地球卫星发射任务的方式和优势做了简要讨论。
Semiconductor laser pumped alkali metal vapor lasers (DPALs) provide near-infrared continuous-wave laser output with high power, high efficiency, and near-diffraction limits for better overall performance than other conventional high-power lasers. Its emission wavelength is close to the atmospheric transmission window and coincides with the high absorption wavelength of the semiconductor photoelectric conversion device. Therefore, the space laser energy transfer system using DPAL as a light source has a good application prospect in the field of aerospace. First, the basic principles and structure of the DPAL are outlined, and a brief discussion of the ways and advantages of the DPAL as a source of energy for the simultaneous launch mission of the Earth satellites is given.