New phase-matchable nonlinear optical crystals of the formate family

Author

Ito, Hiromasa ; Naito, Hatsuhiko ; Inaba, Humio

Author_Institution

Tohoku University, Sendai, Japan

Volume

10

Issue

2

fYear

1974

fDate

2/1/1974 12:00:00 AM

Firstpage

247

Lastpage

252

Abstract

New nonlinear optical orthorhombic formate crystals HCOONa and HCOOLi0.9Na0.1H2O have been grown from aqueous solutions in order to extend the transparency to the near infrared region. Their transmission characteristics, refractive indices, and Sellmeier\´s dispersion relations, together with nonlinear optical properties associated with second-harmonic generation (SHG), have been examined. By measuring second-harmonic intensities from these two crystals generated with a repetitively $Q$ -switched Nd :YAG laser, we have derived the effective second-order nonlinearities deffas a function of the phase-matching angles θ and φ. These compare favorably with the analytical result. The optimum SHG condition for both the Crystals can be determined through the analysis. HCOOLi0.9Na0.1. H2O mixed crystal is transparent from 0.24 to about 1.9 μm with wider infrared transmission compared with lithium formate. It is of practical interest for its useful second-order nonlinearity and easily-grown large crystals.

Keywords

Character generation; Crystals; Dispersion; Frequency conversion; Nonlinear optics; Optical frequency conversion; Optical harmonic generation; Optical refraction; Optical variables control; Q measurement;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.1974.1145786

Filename

1145786