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首页> 外文期刊>Optical Review >Grating formation in Fe:LiNbO3 photorefractive crystal by chirped 800-nm femtosecond laser pulses operated at 1 kHz
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Grating formation in Fe:LiNbO3 photorefractive crystal by chirped 800-nm femtosecond laser pulses operated at 1 kHz

机译：Fe：LiNbO3 光折变晶体中的光栅形成，其chi波长为800 nm的飞秒激光脉冲的工作频率为1 kHz

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摘要

We demonstrate an extension of forming a photorefractive volume grating in an Fe:LiNbO3 crystal by chirped intense femtosecond laser pulses generated from a Ti:Al2O3 regenerative amplifier at 1 kHz. We confirm that one-photon absorption is still dominant in the Fe:LiNbO3 crystal up to 70 GW/cm2. To generate a photorefractive grating at such a low laser repetition rate within a practical writing time, the laser pulse intensity is increased to 30 GW/cm2. Furthermore, we demonstrate the amplification of femtosecond laser pulses by the chirped volume grating that is written in the Fe:LiNbO3 by two-wave mixing.
机译：我们证明了由Ti：Al2 O3 再生放大器在1 kHz产生的chi强飞秒激光脉冲在Fe：LiNbO3 晶体中形成光折变体光栅的扩展。我们确认，直到70 GW / cm2 ，Fe：LiNbO3 晶体中单光子吸收仍占主导地位。为了在实际写入时间内以如此低的激光重复率产生光折变光栅，激光脉冲强度应增加到> 30 GW / cm2 。此外，我们证明了two波体积光栅对飞秒激光脉冲的放大作用，by光栅通过两次波混频写入Fe：LiNbO3 中。

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  • 来源
    《Optical Review》 |2011年第2期|p.212-217|共6页
  • 作者

    Md. Masudul Kabir; Yu Oishi; Fumihiko Kannari;

  • 作者单位

    Department of Electronics and Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan;

    Department of Electronics and Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan;

    Department of Electronics and Electrical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    ultrashort laser pulse; photorefractive effect; holographic volume grating; two-wave mixing;

    机译：超短激光脉冲;光折变效应;全息体积光栅;两波混频;

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