CAJ | 학술논문

由于2μm波段激光处于大气的窗口上，并且对人眼安全，因而在测风领域具有潜在的应用价值。该波段的激光器可以作为相干多普勒测风雷达和差分吸收雷达的光源。为了进行相干多普勒测风雷达光源的研究，报道了一种脉冲激光二级管(LD)单端抽运Tm：YAG调Q激光器。在实验中，采用L型平凹腔结构，利用声光Q开关实现大能量的激光输出。该激光器输出的激光中心波长为2014.9 nm，在重复频率为100 Hz情况下，调Q后获得最大单脉冲能量为6.11 mJ，激光脉冲宽度为324.7 ns，斜率效率为13.56%的激光输出。输出的脉冲激光的光束质量M2在x方向上为1.31，y方向上为1.35。
유우2μm파단격광처우대기적창구상，병차대인안안전，인이재측풍영역구유잠재적응용개치。해파단적격광기가이작위상간다보륵측풍뢰체화차분흡수뢰체적광원。위료진행상간다보륵측풍뢰체광원적연구，보도료일충맥충격광이급관(LD)단단추운Tm：YAG조Q격광기。재실험중，채용L형평요강결구，이용성광Q개관실현대능량적격광수출。해격광기수출적격광중심파장위2014.9 nm，재중복빈솔위100 Hz정황하，조Q후획득최대단맥충능량위6.11 mJ，격광맥충관도위324.7 ns，사솔효솔위13.56%적격광수출。수출적맥충격광적광속질량M2재x방향상위1.31，y방향상위1.35。
The 2 μm laser is in the atmosphere window and the eye -safety wavelength regions. Therefore, it is expected to have potential application in wide range of fields. The lasers can be a light source of Coherent Doppler Wind Lidars and Differential Absorption Lidars. In order to develop a laser light source of Coherent Doppler Wind Lidars, a pulse LD end pumped Q-switched Tm:YAG laser was developed by using a plano-concave cavity with a acousto-optical (AO) Q-switch. The center wavelength of the output laser was measured to be 2 014.9 nm. In the repetition frequency of 100 Hz, a maximum single energy of 6.11 mJ after Q-switching operation and the narrowest pulse width of 324.7 ns were achieved at room temperature, whose slop efficiency was 13.56%. The M2x was 1.31 and the M2y was 1.35.