We have observed near-monochromatic gains in a Raman amplifier pumped by a laser with a bandwidth up to 30 times wider than the molecular linewidth. This gain enhancement is obtained when the corresponding temporal fine structure of the pump and Stokes waveforms are superimposed in the amplifier.
© 1980 Optical Society of America
Original Manuscript: August 31, 1979
Published: January 1, 1980
E. A. Stappaerts, W. H. Long, and H. Komine, "Gain enhancement in Raman amplifiers with broadband pumping," Opt. Lett. 5, 4-6 (1980)