R. Danielius et al., FEMTOSECOND HIGH-CONTRAST PULSES FROM A PARAMETRIC GENERATOR PUMPED BY THE SELF-COMPRESSED 2ND-HARMONIC OF A ND-GLASS LASER, Optics letters, 20(21), 1995, pp. 2225-2227
Nearly transform-limited femtosecond pulses tunable from 635 to 3000 n
m were generated by a traveling-wave type II phase-matching barium ber
ate parametric generator pumped by the self-compressed second harmonic
of a Nd:glass laser. A total conversion efficiency of 10% with output
pulses as short as 200 fs has been achieved. Numerical simulation ind
icated that the relative amount of energy contained in the output puls
e wings was reduced by similar to 4 x 10(4) compared with that in the
pump. (C) 1995 Optical Society of America