Gp. Banfi et al., TUNABLE FEMTOSECOND PULSES CLOSE TO THE TRANSFORM LIMIT FROM TRAVELING-WAVE PARAMETRIC CONVERSION, Optics letters, 18(18), 1993, pp. 1547-1549
We report the generation of ultrashort pulses by a barium borate trave
ling-wave parametric converter pumped by a 200-fs pulse at 0.6 mum fro
m a dye-laser source. With a pump energy of less than 100 muJ and type
II phase matching, we obtained a 0.75-3-mum tuning range, 15-20% tota
l conversion efficiency, and a pulse duration comparable with that of
the pump. In part of the tuning range the time-bandwidth product of th
e tunable pulses was 0.7, the same value as for the pump.