Magnitude and nature of the quadratic electrooptic effect in potassium dihydrogen phosphate and ammonium dihydrogen phosphate crystals

Citation
Mj. Gunning et al., Magnitude and nature of the quadratic electrooptic effect in potassium dihydrogen phosphate and ammonium dihydrogen phosphate crystals, J OPT SOC B, 18(8), 2001, pp. 1092-1098
Citations number
39
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
ISSN journal
0740-3224 → ACNP
Volume
18
Issue
8
Year of publication
2001
Pages
1092 - 1098
Database
ISI
SICI code
0740-3224(200108)18:8<1092:MANOTQ>2.0.ZU;2-4
Abstract
Measurements of the magnitude and the sign of certain quadratic electro-opt ic coefficients of potassium dihydrogen phosphate (KDP) and ammonium dihydr ogen phosphate (ADP) were made with an actively stabilized Michelson interf erometer. The results obtained for these coefficients are, in units of 10(- 20) m(2)V(-2) (as opposed to literature values of order 10 m(2) V-2), as fo llows: (KDP)g(xxxx) = -3.4 +/- 0.5, g(yyxx) = -0.2 +/- 0.4, and g(zzxx) = - 0.7 +/- 0.4; (ADP)g(xxxx) -7.4 +/- 1.0, g(yyxx) = -1.7 +/- 0.9, and g(zzxx) = 1.4 +/- 0.9. The quadratic Faust-Henry coefficient describing the lattic e and the electronic contributions to the quadratic electro-optic effect in KDP and ADP is estimated from our results. These show that the nonlinear s usceptibility responsible for the quadratic electro-optic effect in these c rystals is due mainly to nonlinear interactions of the low-frequency electr ic field with the crystal lattice. (C) 2001 Optical Society of America.