Non-critical phase matching of GdxY1-xCa4O(BO3)(3)(GdxY1-xCOB) crystal

Citation
Zp. Wang et al., Non-critical phase matching of GdxY1-xCa4O(BO3)(3)(GdxY1-xCOB) crystal, SOL ST COMM, 120(9-10), 2001, pp. 397-400
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
0038-1098 → ACNP
Volume
120
Issue
9-10
Year of publication
2001
Pages
397 - 400
Database
ISI
SICI code
0038-1098(2001)120:9-10<397:NPMOGC>2.0.ZU;2-B
Abstract
By using an optical parametric amplifier (OPA), we have measured the non-cr itical phase-matching (NCPM) wavelengths for frequency-doubling (including type I and type II) in different GdxY1-xCOB crystals. From the Sellmeier eq uations, of YCOB and GdCOB, we calculated the ranges of NCPM wavelengths in GdxY1-xCOB, and compared them with the data obtained from our experiment. When the output power of a mode-locked Nd/YAG laser is 110 mW (lambda = 1.0 64 mum), a conversion efficiency of 37% is obtained for the type II NCPM fr equency-doubling in Gd0.2Y0.8COB crystal. Using a KTP crystal as frequency- doubler, we have achieved NCPM third harmonic generation (THG) in Gd0.22Y0. 78COB crystal. When the output power of Nd/YAG laser is 94 mW and the power of the second-harmonic wave is 38 mW, THG conversion efficiency can reach 21%. (C) 2001 Published by Elsevier Science Ltd.