Stimulated Raman Scattering in Hydrogen Using Capilary Cell

Abstract

Stimulated Raman Scattering processes have been studied and intense Stokes and anti—Stokes laser lines have been observed in a capillary Raman cell filled with molecular hydrogen and pumped by the third harmonic of the Nd:YAG laser at wavelength łD = 355 nm. Various parametric studies have been performed to establish an optimum condition for the best operation of the Raman laser. The observation of higher—order Stokes and anti—Stokes has been explained on the basis of four—wave mixing and/or cascade energy transfer processes.

Key Words:

• Laser
• H₂
• Raman—Scattering
• Stokes
• anti—Stokes