Transverse stimulated Brillouin scattering (SBS) was first observed more than twenty years ago.1 For some time it has been anticipated that transverse SBS in optical components could become an important loss mechanism in nanosecond pulse, short wavelength lasers. Eggleston and Kushner2 have published a model of the effect. We observed transverse SBS in fused silica with 350-nm 2.4-ns pulses in experiments conducted with the LLNL Nova fusion laser. We also demonstrated that an increase in laser bandwidth to ~2.5 GHz (7.5 GHz at 350 nm) reduces SBS to an undetectable level for conditions ~1.4 times the SBS threshold.

© 1989 Optical Society of America

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