title: Nonlinear computer-generated holograms.
abstract: We propose a novel technique for arbitrary wavefront shaping in quadratic nonlinear crystals by introducing the concept of computer-generated holograms (CGHs) into the nonlinear optical regime. We demonstrate the method experimentally showing a conversion of a fundamental Gaussian beam pump light into the first three Hermite-Gaussian beams at the second harmonic in a stoichiometric lithium tantalate nonlinear crystal, and we characterize its efficiency dependence on the fundamental power and the crystal temperature. Nonlinear CGHs open new possibilities in the fields of nonlinear beam shaping, mode conversion, and beam steering.
authors.affiliation: Department of Physical Electronics, School of Electrical Engineering, Tel Aviv University, Tel Aviv 69978, Israel. asiasapi@post.tau.ac.il
authors.forename: Asia
authors.initials: A
authors.lastname: Shapira
authors.forename: Irit
authors.initials: I
authors.lastname: Juwiler
authors.forename: Ady
authors.initials: A
authors.lastname: Arie