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首页> 外文期刊>Applied physics >Total internal reflection-based side-pumping configuration for terawatt ultraviolet amplifier and laser oscillator development
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Total internal reflection-based side-pumping configuration for terawatt ultraviolet amplifier and laser oscillator development

机译：基于全内反射的侧面泵浦配置，用于太瓦级紫外线放大器和激光振荡器的开发

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摘要

A two-side-pumping scheme that is based on total internal reflection in a diamond-cut Ce3+:LiCaAlF6 crystal suitable for the development of an ultraviolet laser and femtosecond amplifier system is proposed. Experimental fluorescence images and lasing results that demonstrate total internal reflection of the excitation beam using this diamond-cut crystal are presented. Calculations for the optimized crystal geometry that facilitate high extraction efficiency and homogeneity of the absorbed excitation beam are also discussed. About 50% increase in extraction efficiency compared to previously reported chirped-pulse femtosecond ultraviolet amplifier operating at 50-GW peak power is expected using this total internal reflection-based two-side-pumping configuration and a diamond-cut Ce3+:LiCaAlF6 crystal with a geometry of = 103A degrees, = = 82A degrees, = 93A degrees, a length of 1.23 cm, a height of 2 cm, and an absorption coefficient of similar to 1.5 cm(-1). Our results can be used as a guide during the crystal growth process by providing the appropriate crystal geometry and size for a particular absorption coefficient to achieve high extraction efficiency. With the appropriate crystal combined with multiple-beam pumping afforded by the side-pumping scheme, the development of an all-solid-state ultraviolet laser operating at terawatt level would be within reach.
机译：提出了一种基于全切面反射的金刚石切割的Ce3 +：LiCaAlF6晶体中的双向泵浦方案，适用于开发紫外激光和飞秒放大器系统。呈现了实验荧光图像和激光结果，这些结果表明了使用这种钻石切割晶体后激发光束的全内反射。还讨论了优化晶体几何结构的计算，该计算有助于提高提取效率和吸收的激发光束的均匀性。与之前报道的chi脉冲飞秒紫外线放大器在50 GW峰值功率下运行相比，使用这种基于全内反射的两侧泵浦配置和钻石切割的Ce3 +：LiCaAlF6晶体，其提取效率预计将提高约50％。几何形状为= 103A度，= = 82A度，= 93A度，长度为1.23厘米，高度为2厘米，吸收系数类似于1.5厘米（-1）。通过为特定的吸收系数提供合适的晶体几何形状和尺寸以实现高提取效率，我们的结果可以用作晶体生长过程中的指导。通过将适当的晶体与侧面泵浦方案提供的多光束泵浦相结合，以太瓦级工作的全固态紫外激光器的开发将是可以实现的。

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  • 来源
    《Applied physics》 |2018年第6期|125.1-125.8|共8页
  • 作者

    Cadatal-Raduba Marilou; Minh Hong Pham; Duong Van Phamz; Duong Thi Thuy Bui; Yamanoi Kohei; Takeda Kohei; Empizo Melvin John F.; Luong Viet Mui; Shimizu Toshihiko; Hung Dai Nguyen; Sarukura Nobuhiko; Fukuda Tsuguo;

  • 作者单位

    Massey Univ, Inst Nat & Math Sci, Auckland 0632, New Zealand;

    Vietnam Acad Sci & Technol, Inst Phys, Hanoi 10000, Vietnam;

    Vietnam Acad Sci & Technol, Inst Phys, Hanoi 10000, Vietnam;

    Vietnam Acad Sci & Technol, Inst Phys, Hanoi 10000, Vietnam;

    Osaka Univ, Inst Laser Engn, 2-6 Yamadaoka, Suita, Osaka 5650871, Japan;

    Osaka Univ, Inst Laser Engn, 2-6 Yamadaoka, Suita, Osaka 5650871, Japan;

    Osaka Univ, Inst Laser Engn, 2-6 Yamadaoka, Suita, Osaka 5650871, Japan;

    Osaka Univ, Inst Laser Engn, 2-6 Yamadaoka, Suita, Osaka 5650871, Japan;

    Osaka Univ, Inst Laser Engn, 2-6 Yamadaoka, Suita, Osaka 5650871, Japan;

    Vietnam Acad Sci & Technol, Inst Phys, Hanoi 10000, Vietnam;

    Osaka Univ, Inst Laser Engn, 2-6 Yamadaoka, Suita, Osaka 5650871, Japan;

    Fukuda Crystal Lab Co Ltd, Aoba Ku, 6-6-3 Minami Yoshinari, Sendai, Miyagi 9893204, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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