An achromatic phase-matching scheme is reported for an optical parametric oscillator in tilted quasi-phase-matched gratings. The spectral angular dispersion is introduced in interaction waves such that each wave component satisfies the two-dimensional (noncollinear) quasi-phase matching. This is equivalent to simultaneous quasi-phase matching and group-velocity matching for ultrashort pulses.
The phase-matching bandwidth for 10 mm periodically poled KTP increases by a factor of 12 at
© 2006 Optical Society of America
Original Manuscript: October 19, 2005
Revised Manuscript: January 3, 2006
Manuscript Accepted: January 20, 2006
Wei Quan Zhang, "Group-velocity-matched optical parametric oscillator in tilted quasi-phase-matched gratings," Appl. Opt. 45, 4977-4981 (2006)