Two-wave mixing amplification of femtosecond laser pulses at 800nm in Rh: BaTiO3 photorefractive crystal

Md Masudul Kabir, Daiki Ito, Yu Oishi, Fumihiko Kannari

Research output: Contribution to journalArticle

Abstract

We report the photorefractive (PR) two-wave mixing amplification (TWMA) of broadband femtosecond laser pulses in a Rh:BaTiO3 crystal by one-photon absorption. Two-wave mixing (TWM) is performed in the crystal using 30fs laser pulses at an 800 nm wavelength. A maximum two-wave mixing amplification gain coefficient of ∼11/cm was achieved using a chirped volume grating written at a grating spacing of 5 μm. The broadband spectrum and the original phase characteristics of the signal pulse are also maintained. Beam fanning for the femtosecond pulse laser is less pronounced than that for the cw laser, facilitating a higher two-wave mixing gain for femtosecond pulse lasers.

Original languageEnglish
JournalJapanese Journal of Applied Physics
Volume50
Issue number10 PART 1
DOIs
Publication statusPublished - 2011 Oct

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Photorefractive crystals
Ultrashort pulses
Amplification
pulses
crystals
lasers
Laser pulses
Crystals
gratings
broadband
Photons
Wavelength
spacing
Lasers
photons
coefficients
wavelengths

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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Two-wave mixing amplification of femtosecond laser pulses at 800nm in Rh : BaTiO3 photorefractive crystal. / Kabir, Md Masudul; Ito, Daiki; Oishi, Yu; Kannari, Fumihiko.

In: Japanese Journal of Applied Physics, Vol. 50, No. 10 PART 1, 10.2011.

Research output: Contribution to journalArticle

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