Noncollinear frequency conversion in the PPKTP

Author

Piskarskas, A. ; Smilgevicius, V. ; Stabinis, A. ; Jarutis, V. ; Pasiskevicius, V. ; Wang, S. ; Tellefsen, J.A. ; Laurell, F.

Author_Institution

Laser Res. Center, Vilnius Univ., Lithuania

fYear

2000

fDate

7-12 May 2000

Firstpage

354

Lastpage

355

Abstract

Summary form only given. Noncollinear interaction in birefringence phase-matched nonlinear crystals is usually used for the tuning of the output wavelength and group-velocity matching in short pulse optical parametric generators. The output beam shaping in travelling wave optical parametric generator (TOPG) with bulk crystal pumped by a Bessel beam in multiple noncollinear phase matching geometry has been demonstrated. In periodically poled KTiOPO/sub 4/ (KTP) (PPKTP) the effective nonlinear coefficients are several times larger than in the case of birefringence phase-matching. So relatively low parametric generation threshold has been demonstrated recently. We have investigated the second harmonic (SH) generation in PPKTP crystal pumped by Bessel beam in multiple noncollinear phase matching geometry.

Keywords

birefringence; dielectric polarisation; optical frequency conversion; optical materials; optical parametric devices; optical phase matching; optical tuning; potassium compounds; Bessel beam; KTiOPO/sub 4/; birefringence; birefringence phase-matching; bulk crystal; effective nonlinear coefficients; group-velocity matching; low parametric generation threshold; multiple noncollinear phase matching geometry; noncollinear frequency conversion; output beam shaping; periodically poled; phase-matched nonlinear crystals; second harmonic generation; short pulse optical parametric generators; travelling wave optical parametric generator; Birefringence; Crystals; Frequency conversion; Geometrical optics; Laser excitation; Nonlinear optics; Optical frequency conversion; Optical pulse generation; Optical pumping; Optical tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on

Conference_Location

San Francisco, CA, USA

Print_ISBN

1-55752-634-6

Type

conf

DOI

10.1109/CLEO.2000.907107

Filename

907107