Shaping of light beams by 3D direct laser writing on facets of nonlinear crystals

Shlomi Lightman*, Raz Gvishi, Gilad Hurvitz, Ady Arie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate experimentally spatial-mode conversions of light beams generated in a quadratic nonlinear process by micron-scale structures placed on the facets of nonlinear crystals. These structures were printed on the crystal facets using a three-dimensional (3D) direct laser writing system. The functional structures were designed to modify the phase of the beam at specific wavelengths, thereby enabling conversion of a fundamental Gaussian laser beam into different high-order Hermite Gaussian modes, Laguerre Gaussian modes, and zeroth-order Bessel beams of the second harmonic. This facet functionalization opens exciting new opportunities for robust and compact beam shaping in a nonlinear interaction without compromising the conversion efficiency.

Original languageEnglish
Pages (from-to)4460-4463
Number of pages4
JournalOptics Letters
Volume40
Issue number19
DOIs
StatePublished - 1 Oct 2015

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