Complex Stimulated Raman Vibrational-Rotational Spectra in Hydrogen

Highly complex stimulated Raman scattering (SRS) spectra of hydrogen were produced by using narrow linewidth 1.058-μ giant-pulsed laser excitation. Results are presented which include the first reported observation of combination Raman lines whose frequencies are given by mvQ(1) + pvS(1) − vL where vQ(1), vS(1) and vL are the vibrational (4155 cm−1), rotational (587 cm−1) and laser frequency, respectively, m = 6, 7, or 9 and p = 0 or ±1. Numerous Raman lines described by the formula v = vL + mvQ(1) + nvS(0) + pvS(1), (m, n, p = 0, ±1, ±2,…), where vS(1) = 354 cm−1, were also observed.