Generation of a femtosecond vacuum ultraviolet optical pulse by four-wave Raman mixing

Vu Duong, Trong Nghia Nguyen, Totaro Imasaka

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

The pressure dependence of the emission intensities measured for Raman sidebands arising through three-color four-wave difference-frequency mixing (FWRM) was examined using a 200 nm probe beam. Using a three-color FWRM scheme, it was possible to efficiently generate Raman sidebands in the vicinity of the probe beam. By introducing a two-color pump pulse prior to the probe pulse, the coherent vibrational motion of hydrogen was induced immediately after the pump pulse and continued thereafter on a time scale of at least several picoseconds. The intensity of the anti-Stokes sideband increased with increasing hydrogen pressure at low pressures. The ratio of the intensities measured for cascade Raman emissions approached 27% at high pressures. When the fourth harmonic emission was employed as a probe beam, the anti-Stokes emission was observed at 185 nm. The conversion efficiency and the pulse energy were estimated to be 16% and 1.6 μJ, respectively. The conversion efficiency could be increased if a probe laser with a better beam quality were used and even a higher value could be obtained if a pump laser with a higher output power were to be used, in conjunction with a capillary waveguide to increase the interaction length with a Raman-active medium of hydrogen.

元の言語英語
ページ(範囲)184-187
ページ数4
ジャーナルOptics and Laser Technology
88
DOI
出版物ステータス出版済み - 1 1 2017

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Laser pulses
Vacuum
vacuum
sidebands
probes
Hydrogen
pulses
Pumps
pumps
Color
color
Conversion efficiency
hydrogen
Beam quality
Lasers
pressure dependence
lasers
cascades
Waveguides
low pressure

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

これを引用

Generation of a femtosecond vacuum ultraviolet optical pulse by four-wave Raman mixing. / Duong, Vu; Nguyen, Trong Nghia; Imasaka, Totaro.

:: Optics and Laser Technology, 巻 88, 01.01.2017, p. 184-187.

研究成果: ジャーナルへの寄稿記事

Duong, Vu ; Nguyen, Trong Nghia ; Imasaka, Totaro. / Generation of a femtosecond vacuum ultraviolet optical pulse by four-wave Raman mixing. :: Optics and Laser Technology. 2017 ; 巻 88. pp. 184-187.
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