Abstract

Using pulses with tilted pulse fronts to compensate for the group-velocity mismatch in three-wave interactions, we constructed an efficient 400-nm pumped femtosecond collinear type  I phase-matched β-barium borate optical parametric generator and amplifier. The signal and idler outputs are tunable from 470  nm to 2.7  µm and have pulse widths in the range of 100–170  fs at a 1-kHz repetition rate. A maximum output energy of 6.5  µJ and a total conversion efficiency of more than 15% were achieved.

© 1997 Optical Society of America

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