Grating formation in Fe:LiNbO3 photorefractive crystal by chirped 800-nm femtosecond laser pulses operated at 1 kHz

Md Masudul Kabir, Yu Oishi, Fumihiko Kannari

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    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.

    Original languageEnglish
    Pages (from-to)212-217
    Number of pages6
    JournalOptical Review
    Issue number2
    Publication statusPublished - 2011 Mar 1



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

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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