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Study on K(D x H 1‐x ) 2 PO 4 Crystals: Growth Habit, Optical Properties and their Improvement by Thermal‐Conditioning
Author(s) -
Fu Y.J.,
Gao Z.S.,
Wang S.L.,
Li Y.P.,
Zeng H.,
Duan AiD.,
Luo J.P.
Publication year - 2000
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/(sici)1521-4079(200002)35:2<177::aid-crat177>3.0.co;2-5
Subject(s) - differential scanning calorimetry , conditioning , calorimetry , analytical chemistry (journal) , homogeneity (statistics) , absorption (acoustics) , chemistry , phase transition , laser , materials science , transition temperature , attenuation coefficient , optics , thermodynamics , chromatography , condensed matter physics , composite material , superconductivity , statistics , physics , mathematics
Phosphite, which often exists in growth solutions obtained directly from commercial P 2 O 5 , was found to have significant inhibiting effects on the growth of pyramidal face of KDP crystals. K(D x H 1‐x ) 2 PO 4 (referred to as DKDP) crystals with different deuterium fraction x were grown and the optical performances were investigated. The absorption coefficients at 1.05 μm decreases monotonically with the increase of x. The transmission threshold shift from 1.65μm at x=0 to 2.10 μm at x=0.96. The high temperature phase transition temperature and latent heat were measured using the method of differential scanning calorimetry (DSC). Thermal conditioning experiments were carried out at 180°C and 140°C for KDP and DKDP, respectively. After conditioning, a different degree of improvement was observed in the optical homogeneity of the samples, while the laser damage threshold and light absorption coefficient showed no significant change.