Applied Physics B

, Volume 70, Issue 3, pp 355–359

Thermal loss mechanism in the generation of multifrequency laser emission via stimulated Raman scattering and four-wave Raman mixing studied by photothermal refraction spectroscopy

  • Y. Hirakawa
  • T. Tomooka
  • T. Imasaka

DOI: 10.1007/s003400050057

Cite this article as:
Hirakawa, Y., Tomooka, T. & Imasaka, T. Appl Phys B (2000) 70: 355. doi:10.1007/s003400050057

Abstract.

The heat produced in conjunction with the processes of stimulated Raman scattering and four-wave Raman mixing in hydrogen was measured by photothermal refraction spectroscopy. Many vibrational, rotational, and vibrationally shifted rotational Raman lines are exclusively/simultaneously generated by changing the polarization of the laser beam and the hydrogen pressure. Thermal loss occurs predominantly from vibrational Raman scattering, which can be ascribed to a large Raman shift frequency of 4155 cm-1 for the vibrational transition. In contrast to stimulated Raman scattering, little or no thermal loss is observable during the process of four-wave Raman mixing.

PACS: 42.65; 51.70

Copyright information

© Springer-Verlag 2000

Authors and Affiliations

  • Y. Hirakawa
    • 1
  • T. Tomooka
    • 1
  • T. Imasaka
    • 1
  1. 1.Department of Chemical Systems and Engineering, Graduate School of Engineering, Kyushu University, Hakozaki, Fukuoka 812-8581, Japan (Fax: +81-92/632-5209, E-mail: imasaka@cstf.kyushu-u.ac.jp)JP