Nonresonant quasi-phase matching in GaAs plates by Fresnel birefringence

Haidar, Riad; Kupecek, Ph.; Rosencher, E.
August 2003
Applied Physics Letters;8/25/2003, Vol. 83 Issue 8, p1506
Academic Journal
Quasi-phase matching is usually obtained by sign reversal of nonlinear susceptibility. This leads to resonant condition on nonlinear material dimensions and/or converted frequencies. We show that this condition is alleviated using total reflection birefringence. Indeed, Fresnel dephasing at reflection can compensate for almost any phase lag between interacting waves. This nonresonant phase-matching scenario allows both large tunability and nonlinear device design tolerance. © 2003 American Institute of Physics.


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