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Noncentrosymmetry Observed in CaC 4 H 4 O 6 · 4H 2 O Crystals by Nonlinear Optical Measurements
Author(s) -
P. C. Medrano,
Günter P.,
Arend H.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221430235
Subject(s) - tetrahydrate , second harmonic generation , tartrate , analytical chemistry (journal) , wavelength , tartaric acid , absorption (acoustics) , nonlinear optical , refractive index , materials science , nonlinear optics , chemistry , crystallography , nonlinear system , inorganic chemistry , optics , physics , crystal structure , optoelectronics , laser , organic chemistry , quantum mechanics , citric acid , composite material , chromatography
Calcium tartrate tetrahydrate (L‐CTT) is reported to have point group symmetry mmm at room temperature. Second harmonic generation experiments indicate that calcium tartrate tetrahydrate prepared from pure L‐tartaric acid has the noncentrosymmetric point group mm2. All the nonlinear optical d ‐coefficients are determined. Linear optical properties of this material such as: refractive indices and absorption constant are measured in the range 200 nm < λ < 2000 nm and the phase matching conditions for optical frequency doubling are derived. Non critical type I phase matching can be achieved in L‐CTT at room temperature for a fundamental wavelength of λ = 816 nm.