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Polarization Control Yields Ultrashort Raman Radiation Pulses

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In many experimental setups, stimulated Raman scattering is an attractive method for laser frequency conversion. However, when the conversion must be done in the femtosecond regime, Raman scattering becomes problematic because other nonlinear effects suppress the Raman gain. By manipulating the polarization of pump and prepump pulses, researchers from Riken in Saitama, Japan, have achieved a laser efficiency of 80 percent for 60-fs-pulse-width Raman sideband radiation produced from H2 in the spectral range of 360 to 440 nm. As reported in the Feb. 4 issue of Applied Physics Letters, the...Read full article

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    Published: June 2002
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