Open AccessOn the frequency-doubled conically-refracted Gaussian beam
Author(s) -
Stephen Grant,
Svetlana Zolotovskaya,
Todor K. Kalkandjiev,
W. A. Gillespie,
Amin Abdolvand
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.021347
Subject(s) - optics , potassium titanyl phosphate , gaussian beam , polarization (electrochemistry) , laser beam quality , beam (structure) , light beam , materials science , physics , refraction , laser beams , laser , chemistry
A Potassium Titanyl Phosphate (KTP) crystal has been used in conjunction with a 10-ps pulsed laser to produce a frequency-doubled conically-refracted Gaussian beam. The 'free' and 'forced' beams that make up the scheme for nonlinear conical refraction were readily observable in non-phase-matched conditions. The dependency of the frequency-doubled beam patterns on the incident beam polarization, which until now has remained unexplored, was examined in detail. We have also revealed the existence of two orthogonally polarized 'free' rays for particular orientations of the incident beam polarization.