Abstract

Velocity-matched efficient ultrashort THz pulse generation is achieved in a lithium niobate crystal by tilting the intensity front of the Ti:sapphire laser excitation pulses. The generated broad-band THz radiation has a divergence smaller than 30 mrad, and a center frequency larger than 2 THz. The energy conversion efficiency is close to 10-5.

© 2003 Optical Society of America

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