May 1, 2001Chemistry of Materials212 citations
View Full PaperSynthesis and Characterization of Te2SeO7: A Powder Second-Harmonic-Generating Study of TeO2, Te2SeO7, Te2O5, and TeSeO4
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Abstract
The synthesis and characterization of a noncentrosymmetric tellurium selenate, Te 2 SeO 7, is reported. In addition, the powder second-harmonic-generating (SHG) properties of TeO 2, Te 2 SeO 7, Te 2 O 5, and TeSeO 4 have been measured, using 1064 nm radiation. Through the powder SHG experiments, we are able to determine that TeO 2 is not phase-matchable, whereas Te 2 SeO 7, Te 2 O 5, and TeSeO 4 are phase-matchable. Also, TeO 2, Te 2 SeO 7, Te 2 O 5, and TeSeO 4 have SHG efficiencies of 5, 200, 400, and 400 times SiO 2, respectively. The relative SHG efficiencies may be understood by examining the structure of each material. Through the powder SHG measurements, we estimate the average nonlinear optical bond susceptibility, 〈 d 2 ω ijk 〉, for each material.