Abstract

We report generation of millijoule-level Stokes (873, 961nm) and anti-Stokes (738, 685, 639nm) sidebands of 800nm terawatt pulses by inserting a multistage Ba(NO3)2 Raman shifter-amplifier into a conventional Ti:sapphire chirped-pulse amplification system. The Raman subsystem requires no additional pump lasers and does not compromise the energy, duration, or beam quality of the main 800nm pulses. The chirped first Stokes (870nm) beam is compressed to transform limit (100fs) with several millijoules of energy and has high beam quality and is free of filamentation. Synchronized 800nm and Raman sideband pulses are useful for a variety of two-color, high-intensity laser experiments.

© 2008 Optical Society of America

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