Abstract

We have demonstrated the transformation of elliptical beams into cylindrically symmetric beams through the formation of quadratic spatial solitons. By use of type II phase-matched second-harmonic generation in a KTP crystal, input elliptical beams with aspect ratios as large as 8:1 were propagated through the KTP crystal, and they exited the crystal as a cylindrically symmetric beam. The threshold for soliton formation and the power throughput were measured versus ellipticity.

© 1997 Optical Society of America

Quadratic spatial soliton generation by seeded downconversion of a strong harmonic pump beam

M. T. G. Canva, R. A. Fuerst, S. Baboiu, G. I. Stegeman, and G. Assanto
Opt. Lett. 22(22) 1683-1685 (1997)

Properties of type II quadratic solitons excited by imbalanced fundamental waves

R. A. Fuerst, M. T. G. Canva, D. Baboiu, and G. I. Stegeman
Opt. Lett. 22(23) 1748-1750 (1997)

Experiments in quadratic spatial soliton generation and steering in a noncollinear geometry

V. Couderc, E. Lopez Lago, C. Simos, and A. Barthelemy
Opt. Lett. 26(12) 905-907 (2001)

Generation of two-dimensional, spatial solitonlike beams by laser modes in a quadratic medium

Pascal Agin and George I. Stegeman
J. Opt. Soc. Am. B 14(11) 3162-3169 (1997)

Quadratic spatial solitons in periodically poled KTiOPO₄

Hongki Kim, Ladislav Jankovic, George Stegeman, Silvia Carrasco, Lluis Torner, David Eger, and Mordechai Katz
Opt. Lett. 28(8) 640-642 (2003)