Abstract

We demonstrate high-energy picosecond near-vacuum ultraviolet laser pulse generation. Frequency quadrupling is achieved by noncollinear sum-frequency mixing of the fundamental and the third harmonic of a two-stage Ti:sapphire amplifier in β-BaB2O 4 crystal. UV pulses with energies of 10  mJ tunable from 195 to 210  nm at a 10  Hz repetition rate are obtained.

© 2007 Optical Society of America

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