We validated the theory of angular quasi-phase-matching (AQPM) by performing measurements of second-harmonic generation and difference-frequency generation. A nonlinear least-squares fitting of these experimental data led to refine the Sellmeier equations of 5%MgO:PPLN that are now valid over the complete transparency range of the crystal. We also showed that AQPM exhibits complementary spectral ranges and acceptances compared with birefringence phase matching.
© 2009 Optical Society of America
Original Manuscript: May 28, 2009
Revised Manuscript: June 23, 2009
Manuscript Accepted: July 10, 2009
Published: August 19, 2009
Pierre Brand, Benoît Boulanger, Patricia Segonds, Yannick Petit, Corinne Félix, Bertrand Ménaert, Takunori Taira, and Hideki Ishizuki, "Angular quasi-phase-matching experiments and determination of accurate Sellmeier equations for 5%MgO:PPLN," Opt. Lett. 34, 2578-2580 (2009)