Following the recent experiments of Trebino and Rahn [Opt. Lett. 12, 912 (1987)], I show on general grounds the existence of the fractional Raman resonances in a variety of nonlinear mixing processes in atomic vapors, molecules, and solids. I present theoretical models, both classical and quantum, for such resonances.
© 1988 Optical Society of America
Original Manuscript: September 28, 1987
Manuscript Accepted: March 21, 1988
Published: June 1, 1988
G. S. Agarwal, "Subharmonic Raman effect in nonlinear mixing," Opt. Lett. 13, 482-484 (1988)