Characteristics of a Raman laser excited by an ordinary ruby laser

The stimulated Raman effect of benzene has been observed using an ordinary (nongiant) ruby laser. The build-up of oscillation at the v
2
, 2v
2
, 3v
2
and 4v
2
Stokes lines and also at the first v
1
Stokes line have been observed. The threshold exciting power for laser action in the v
2
Stokes line has been measured to be 9.5 kW. A rate equation for the Raman laser has been given, and the total scattering cross section for the v
2
Raman line of benzene has been determined as σ = 0.46×10
^-28
cm
²
. The estimation based on the results of this investigation indicates that it is possible to construct a Raman laser of benzene using an Ar gas laser.