被动调q、Cr:YAG/Nd:YAG微激光器用于发动机点火的高温运行

CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference Pub Date : 2009-06-14 DOI:10.1109/CLEOE-EQEC.2009.5192379

M. Tsunekane, T. Taira

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引用次数: 5

摘要

研制了一种紧凑、高亮度的光纤耦合ld端泵浦被动调q微激光器，用于发动机点火。在脉冲能量为2.7mJ时，计算出微激光的亮度为0.3PW/sr-cm2，聚焦光功率强度为5TW/cm2。600ps的短脉冲宽度和M2=1.2的高光束质量可以成功地降低点火能量，从而使激光头尺寸与火花塞相当。此外，由于没有电极，微激光点火器表现出燃烧加速和稀薄混合气体点火的特性。(1 - 5)

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High temperature operation of passively Q-switched, Cr:YAG/Nd:YAG micro-laser for ignition of engines

The compact, high brightness passively Q-switched micro-lasers end-pumped by fiber-coupled LDs were developed for ignition of engines. The brightness of the micro-laser was calculated to be 0.3PW/sr-cm2 and the focused optical power intensity is estimated to be 5TW/cm2 at the pulse energy of 2.7mJ. The short pulse width of 600ps and the high beam quality of M2=1.2 can successfully reduce the ignition energy and then the laser head size comparable to a spark plug. In addition the micro-laser igniter demonstrated the acceleration of combustion and the ignition for leaner mixture gas due to the absence of electrodes. [1–5]

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CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference

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