Generation of infrared radiation by stimulated Raman scattering in para-hydrogen crystal at 5 K.
We report the preliminary results of our experiments with stimulated Raman scattering in para-hydrogen crystal aimed at developing a continuously tunable laboratory laser source of mid-infrared radiation. With laser pulses at 532 nm, a conversion efficiency for the first Stokes beam of as much as 20% in the forward direction was observed through a single-pass, 5-cm-long crystal. Generation of mid-infrared pulses at 4.5 microm was achieved by use of the output of a near-infrared pulsed laser (1.6 microm, 3 ns), and an absorption spectrum of gaseous CD4 molecules was successfully recorded. These results suggest use of the solid para-hydrogen Raman shifter as a promising light source for mid-infrared spectroscopy.
Fushitani
Mizuho
M
Division of Chemistry, Graduate School of Science, Kyoto University, Kyoto, Japan.
Kuma
Susumu
S
Miyamoto
Yuuki
Y
Katsuki
Hiroyuki
H
Wakabayashi
Tomonari
T
Momose
Takamasa
T
Vilesov
Andrey F
AF