Compressed air ignition non-electric pyrotechnically pumped laser technology
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摘要: 为了解决传统固体烟火泵浦激光器点火效率低和电能依赖的问题,根据绝热压缩原理,设计使用了完全无电的压缩空气点燃烟火药泵浦Nd:YAG激光介质,提高了点火同步性和烟火药燃烧效率,实现了激光输出阈值药剂量10 mg,使用30 mg KClO4/Zr药剂,获得了30.2 mJ的激光能量,脉冲宽度10 ms,为小型无电高能激光器提供了一条新的实现路径。Abstract: To address the low ignition efficiency and reliance on electricity in traditional solid-state pyrotechnic pumped lasers, we designed a system based on the principle of adiabatic compression, utilizing entirely non-electric compressed air to ignite the pyrotechnic materials in an Nd:YAG laser medium. This design improves ignition synchronicity and pyrotechnic material combustion efficiency, achieving a laser output threshold of 10 mg pyrotechnic agent and utilizing 30 mg KClO4/Zr agent, resulting in a laser energy of 30.2 mJ with a pulse width of 10 ms. This advancement provides a new implementation pathway for small-scale non-electric high-energy lasers.
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Key words:
- solid state laser /
- pyrotechnic pumping /
- ignition method /
- compressed air /
- electric energy
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表 1 压缩空气点火实验结果
Table 1. Experimental results of compressed air ignition
cylinder bore diameter/mm piston stroke/mm luminescent length/mm compression ratio adiabatic temperature/℃ ignition status 8 100 10 11.00 322 √ 8 100 15 7.67 264 √ 8 100 20 6.00 228 √ 8 100 25 5.00 202 √ 8 100 30 4.33 183 × 8 100 35 3.86 168 × 10 100 10 11.00 322 √ 10 100 15 7.67 264 √ 10 100 20 6.00 228 × 10 100 25 5.00 202 × 10 100 30 4.33 183 × 10 100 35 3.86 168 × 表 2 压缩空气点火激光输出实验结果
Table 2. Experimental results of laser output with compressed air ignition
pyrotechnic mass/mg compression ratio luminescent length/mm laser energy/mJ note 10 7.67 15 no laser 10 6.00 20 no laser 10 5.00 25 8.4 20 7.67 15 6.0 20 6.00 20 10.5 20 5.00 25 12.7 30 7.67 15 cylinder explosion 30 6.00 20 18.4 30 5.00 25 30.2 40 7.67 15 cylinder explosion 40 6.00 20 cylinder explosion 40 5.00 25 cylinder explosion 表 3 烟火泵浦激光器的主要研究成果
Table 3. Main research achievements of the pyrotechnic pumped laser
reference ignition
methodpyrotechnic
formmax threshold
mass/mgmax pulse
width/msmax pyrotechnic
mass/mgmax laser
energymax specific
energy/(J·g−1)this article compressed air dust cloud 10 5 30 30.2 1.01 in Ref.[16] point-type electric dust cloud 20 50 150 2151 14.33 in Ref.[2] line-type electric granular 80 7-10 — — — in Ref.[10] line-type electric granular — 7 500 1000 2.00 in Ref.[9] line-type electric granular — 1.2 50 55 1.10 in Ref.[23] line-type electric torus — 5.6 850 5500 6.47 in Ref.[15] line-type electric granular 1080 40 2520 1010 0.40 in Ref.[19] surface flash electric plane 20 10 100 702 7.02 -
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