We demonstrate a tunable deep-ultraviolet coherent source generated by the beating of a tunable UV laser and strongly driven vibrational Raman coherence in hydrogen. The total energy conversion efficiency reaches a maximum of 50% at the phase side of the Raman coherence. The generated spectrum of Raman sidebands tunes with the input and extends from 435 to 146 nm for an input at 282 nm.
© 2005 Optical Society of America
(020.1670) Atomic and molecular physics : Coherent optical effects
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.5650) Nonlinear optics : Raman effect
(270.1670) Quantum optics : Coherent optical effects
Wei-Jan Chen and A. H. Kung, "Tunable deep-ultraviolet source generated by scattering off adiabatically prepared Raman coherence in hydrogen gas," Opt. Lett. 30, 2608-2610 (2005)