用于空间碎片探测的百赫兹3.31 J高光束质量全固态Nd:YAG激光器
发布时间：2018-08-18 08:12
【摘要】：基于激光二极管侧面抽运棒状放大器的方式,研制了一台应用于空间碎片探测的高重复频率、高光束质量焦耳级的Nd:YAG纳秒激光器.激光器采用主振荡功率放大的结构,主要包括单纵模种子、预放大单元、受激布里渊散射相位共辄光束控制单元和能量提取单元四部分.在能量提取单元,为了减小热效应对光束质量的影响,降低了放大器的工作电流,采用了分束-放大-合束的方案.在重复频率100 Hz,单纵模种子注入单脉冲能量10.73μJ的条件下,获得了3.31 J的能量输出.输出激光的脉冲宽度为4,58 ns,远场光束质量为2.12倍衍射极限,能量稳定性(BMS)为0.87%.
[Abstract]:Based on the laser diode side-pumped rod amplifier, a Nd:YAG nanosecond laser with high repetition rate and high beam quality is developed for space debris detection. The laser adopts the structure of main oscillation power amplification, which includes single longitudinal mode seed, preamplifier unit, stimulated Brillouin scattering phase control unit and energy extraction unit. In the energy extraction unit, in order to reduce the effect of thermal effect on the beam quality and reduce the working current of the amplifier, the scheme of split-amplifying and combining beam is adopted. At a repetition rate of 100 Hz and a single longitudinal mode seed injected with a single pulse energy of 10.73 渭 J, an energy output of 3.31 J was obtained. The pulse width of the output laser is 458 ns, the diffractive limit of the far-field beam is 2.12 times, and the energy stability (BMS) is 0.87.
【作者单位】： 中国科学院光电研究院;国家半导体泵浦激光工程技术研究中心;中国科学院大学;中科和光(天津)应用激光技术研究所有限公司;
【基金】：国家重大科研装备研制项目(批准号:ZDYZ2013-2) 科技部创新人才推进计划重点领域创新团队(批准号:2014RA4051) 中国科学院青年创新促进会资助的课题~~
【分类号】：TN248
，
本文编号：2188889
[Abstract]:Based on the laser diode side-pumped rod amplifier, a Nd:YAG nanosecond laser with high repetition rate and high beam quality is developed for space debris detection. The laser adopts the structure of main oscillation power amplification, which includes single longitudinal mode seed, preamplifier unit, stimulated Brillouin scattering phase control unit and energy extraction unit. In the energy extraction unit, in order to reduce the effect of thermal effect on the beam quality and reduce the working current of the amplifier, the scheme of split-amplifying and combining beam is adopted. At a repetition rate of 100 Hz and a single longitudinal mode seed injected with a single pulse energy of 10.73 渭 J, an energy output of 3.31 J was obtained. The pulse width of the output laser is 458 ns, the diffractive limit of the far-field beam is 2.12 times, and the energy stability (BMS) is 0.87.
【作者单位】： 中国科学院光电研究院;国家半导体泵浦激光工程技术研究中心;中国科学院大学;中科和光(天津)应用激光技术研究所有限公司;
【基金】：国家重大科研装备研制项目(批准号:ZDYZ2013-2) 科技部创新人才推进计划重点领域创新团队(批准号:2014RA4051) 中国科学院青年创新促进会资助的课题~~
【分类号】：TN248
，
本文编号：2188889
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