Generation of 30 pure rotational Raman sidebands using two-color pumping of D2 gas by KrF laser

A new two-color pumping method for multi-frequency Raman generation was developed using deuterium gas combined with KrF excimer lasers. To obtain a powerful two-color radiation, the pump and its first Stokes (Stokes shift Ω = 179 cm−1) were simultaneously amplified by a KrF amplifier. Thirty pure rotational Raman sidebands were generated by focusing two-color radiation in cooled deuterium.