A novel scheme to achieve broadband cascaded third-harmonic generation by use of two-dimensional quasi-phase-matching gratings is proposed. Intrinsic group-velocity mismatch is compensated by the pulse front tilt in noncollinear interaction geometry. The presented scheme enables broadband third-harmonic generation in a single device of long interaction length, which reduces the operation intensity dramatically.
© 2006 Optical Society of America
Original Manuscript: April 26, 2006
Revised Manuscript: June 21, 2006
Manuscript Accepted: June 26, 2006
Published: August 25, 2006
Nobuhide Fujioka, Satoshi Ashihara, Hidenobu Ono, Tsutomu Shimura, and Kazuo Kuroda, "Group-velocity-mismatch compensation in cascaded third-harmonic generation with two-dimensional quasi-phase-matching gratings," Opt. Lett. 31, 2780-2782 (2006)