We develop a technique for two-dimensional arbitrary wavefront shaping in quadratic nonlinear crystals by using binary nonlinear computer generated holograms. The method is based on transverse illumination of a binary modulated nonlinear photonic crystal, where the phase matching is partially satisfied through the nonlinear Raman–Nath process. We demonstrate the method experimentally showing a conversion of a fundamental Gaussian beam pump light into three Hermite–Gaussian and three Laguerre–Gaussian beams in the second harmonic. Two-dimensional binary nonlinear computer generated holograms open wide possibilities in the field of nonlinear beam shaping and mode conversion.
© 2012 Optical Society of America
Original Manuscript: March 12, 2012
Manuscript Accepted: April 2, 2012
Published: June 1, 2012
Asia Shapira, Roy Shiloh, Irit Juwiler, and Ady Arie, "Two-dimensional nonlinear beam shaping," Opt. Lett. 37, 2136-2138 (2012)