We demonstrate that, for tilted pulses, the contribution to group velocity that is due to spatial walk-off can compensate for the group-velocity mismatch in three-wave interactions. With 100-fs, 0.4-μm pump pulses in β-barium borate, we obtained efficient parametric generation of collinear superfluorescence tunable in the range from 0.456 to 3.25 μm.
© 1996 Optical Society of America
Original Manuscript: January 11, 1996
Published: July 1, 1996
R. Danielius, P. Di Trapani, C. Solcia, P. Foggi, A. Andreoni, and A. Piskarskas, "Matching of group velocities by spatial walk-off in collinear three-wave interaction with tilted pulses," Opt. Lett. 21, 973-975 (1996)