The emission lines generated by four-wave Raman mixing were coherently phased and provided an ~30-fs pulse without any loss of energy simply by passage of the pulse beam through molecular hydrogen.
© 2004 Optical Society of America
(140.3550) Lasers and laser optics : Lasers, Raman
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(290.5910) Scattering : Scattering, stimulated Raman
(320.2250) Ultrafast optics : Femtosecond phenomena
Hiroyuki Otsuka, Tomohiro Uchimura, and Totaro Imasaka, "Phase locking in four-wave Raman mixing for generation of an ultrashort laser pulse," Opt. Lett. 29, 400-402 (2004)