The choice of optimum phase-matching conditions for noncollinear optical parametric amplifiers is usually made on the basis of the linear spectral dispersion characteristics of the anisotropic nonlinear crystal. However, for high-peak-power operation, where pump depletion is involved, it is shown that the tolerance of the parametric gain with regard to k-vector mismatch is to change the optimum phase-matching parameters. Our calculations show that, with the revised parameters, an enhancement in peak power approaching 50% could be achieved.
© 2007 Optical Society of America
Original Manuscript: June 29, 2007
Revised Manuscript: September 6, 2007
Manuscript Accepted: September 13, 2007
Published: October 23, 2007
D. N. Schimpf, J. Rothhardt, J. Limpert, A. Tünnermann, and D. C. Hanna, "Theoretical analysis of the gain bandwidth for noncollinear parametric amplification of ultrafast pulses," J. Opt. Soc. Am. B 24, 2837-2846 (2007)