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LED-side-pumped Nd:YAG laser with > 20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser

机译:LED侧泵浦ND:YAG激光器,具有> 20%的光学效率和高效的被动Q开关LED泵浦固态激光器的演示

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摘要

A LED-array-pumped Nd:YAG laser with optical conversion efficiency up to 20.2% is demonstrated by direct side-pumping without a coupling lens. The 810-nm LED array with a full-width-half-maximum of 30 nm and an area fill factor of 50% is designed to attain high spectral absorption efficiency with a pump density of 151.8 W/cm(2). Furthermore, higher than 45% overall coupling efficiency is achieved by placing the LED array as close as possible to the side of the gain medium for overcoming the large pumped divergence. More importantly, by using the efficient pump scheme, the demonstration of a passively Q-switched LED-pumped laser is successfully realized with a pulsed energy of 1.42 mJ. (C) 2017 Optical Society of America
机译:通过直接侧面泵送而没有耦合透镜,通过光学转换效率的LED阵列泵浦ND:光学转换效率最高可达20.2%。 具有全宽半最大30nm的810-nm LED阵列和50%的区域填充因子旨在获得高光谱吸收效率,泵密度为151.8W / cm(2)。 此外,通过将LED阵列尽可能靠近增益介质的侧面来实现高于45%的总耦合效率,以克服大泵浦发散。 更重要的是,通过使用高效的泵方案,通过1.42 MJ的脉冲能量成功实现了被动Q开关的LED泵浦激光器的演示。 (c)2017年光学学会

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  • 来源
    《Optics Letters》 |2017年第12期|共4页
  • 作者单位

    Natl Chiao Tung Univ Dept Electrophys 1001 Ta Hsueh Rd Hsinchu Taiwan;

    Natl Chiao Tung Univ Dept Electrophys 1001 Ta Hsueh Rd Hsinchu Taiwan;

    Natl Chiao Tung Univ Dept Electrophys 1001 Ta Hsueh Rd Hsinchu Taiwan;

    Natl Chiao Tung Univ Dept Electrophys 1001 Ta Hsueh Rd Hsinchu Taiwan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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