A COMPARISON OF OPTICAL 2ND-HARMONIC GENERATION EFFICIENCY USING BESSEL AND GAUSSIAN BEAMS IN BULK CRYSTALS

Authors
SHINOZAKI K XU CQ SASAKI H KAMIJOH T
Citation
K. Shinozaki et al., A COMPARISON OF OPTICAL 2ND-HARMONIC GENERATION EFFICIENCY USING BESSEL AND GAUSSIAN BEAMS IN BULK CRYSTALS, Optics communications, 133(1-6), 1997, pp. 300-304
Citations number
8
Categorie Soggetti
Optics
Journal title
Optics communications → ACNP
ISSN journal
00304018
Volume
133
Issue
1-6
Year of publication
1997
Pages
300 - 304
Database
ISI
SICI code
0030-4018(1997)133:1-6<300:ACOO2G>2.0.ZU;2-U
Abstract
The conversion efficiencies of optical second-harmonic generation (SHG ) of light by Bessel beams and Gaussian beams in nonlinear crystals ar e compared. A Bessel beam, which has a quasi-nondiffractive nature, is generated by illuminating an axicon lens with a Gaussian beam. The in teraction path lengths are the same for both beams, and are set to be twice the confocal parameter of the Gaussian beams. The Bessel beam is found to have greater SHG efficiency than the Gaussian beam regardles s of the interaction path length and the fundamental wavelength.