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

Duong Vu, Trong Nghia Nguyen, Totaro Imasaka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)184-187
Number of pages4
JournalOptics and Laser Technology
Volume88
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

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

Cite this

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

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

Research output: Contribution to journalArticle

Vu, Duong ; Nguyen, Trong Nghia ; Imasaka, Totaro. / Generation of a femtosecond vacuum ultraviolet optical pulse by four-wave Raman mixing. In: Optics and Laser Technology. 2017 ; Vol. 88. pp. 184-187.
@article{0060868c44534d1eb71af780fb7d71a9,
title = "Generation of a femtosecond vacuum ultraviolet optical pulse by four-wave Raman mixing",
abstract = "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.",
author = "Duong Vu and Nguyen, {Trong Nghia} and Totaro Imasaka",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.optlastec.2016.09.010",
language = "English",
volume = "88",
pages = "184--187",
journal = "Optics and Laser Technology",
issn = "0030-3992",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Generation of a femtosecond vacuum ultraviolet optical pulse by four-wave Raman mixing

AU - Vu, Duong

AU - Nguyen, Trong Nghia

AU - Imasaka, Totaro

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84988487533&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84988487533&partnerID=8YFLogxK

U2 - 10.1016/j.optlastec.2016.09.010

DO - 10.1016/j.optlastec.2016.09.010

M3 - Article

AN - SCOPUS:84988487533

VL - 88

SP - 184

EP - 187

JO - Optics and Laser Technology

JF - Optics and Laser Technology

SN - 0030-3992

ER -