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Title: BaGa{sub 2}GeX{sub 6}(X=S, Se): New mid-IR nonlinear optical crystals with large band gaps

Abstract

New middle infrared nonlinear optical crystals of BaGa{sub 2}GeX{sub 6}(X=S, Se) have been synthesized. The structures of both BaGa{sub 2}GeS{sub 6} and BaGa{sub 2}GeSe{sub 6} were found to be isomorphous exhibiting a three-dimensional framework constructed by the parallel alignment of Ga or Ge tetrahedron groups along the c-aix. The ultraviolet transmittance spectrum indicates the short-wavelength absorption edges of BaGa{sub 2}GeS{sub 6} and BaGa{sub 2}GeSe{sub 6} are 380 nm and 440 nm, respectively. The IR transmittance spectrum shows that the absorption edge of the BaGa{sub 2}GeS{sub 6} crystal is 13.7 {mu}m. Second-harmonic generation of the powder samples was measured with a 2.05 {mu}m laser using the Kurtz and Perry technique, which showed that BaGa{sub 2}GeS{sub 6} and BaGa{sub 2}GeSe{sub 6} are phase-matched materials, and their measured SHG coefficient is {approx}2.1 and {approx}3.5 times as large as the coefficient of AgGaS{sub 2}, or 26.3 pm/V and 43.7 pm/V. - Graphical abstract: The structure of BGGS viewed along the a and c axis and an as-grown crystal. Highlights: Black-Right-Pointing-Pointer Mid-IR NLO crystals of BaGa{sub 2}GeX{sub 6}(X=S, Se) with wide band-gap have been discovered. Black-Right-Pointing-Pointer The structures were constructed by the parallel alignment of Ga or Ge tetrahedra. Black-Right-Pointing-Pointer They are phase-matchable material withmore » their SHG coefficient of 26.3 and 43.7 pm/V.« less

Authors:
;  [1];  [1]
  1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)
Publication Date:
OSTI Identifier:
22149902
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 195; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION; CHALCOGENIDES; CRYSTALS; HARMONIC GENERATION; LASERS; NONLINEAR PROBLEMS; POWDERS; THREE-DIMENSIONAL CALCULATIONS

Citation Formats

Lin, Xinsong, Guo, Yifeng, and Ye, Ning, E-mail: nye@fjirsm.ac.cn. BaGa{sub 2}GeX{sub 6}(X=S, Se): New mid-IR nonlinear optical crystals with large band gaps. United States: N. p., 2012. Web. doi:10.1016/J.JSSC.2012.01.043.
Lin, Xinsong, Guo, Yifeng, & Ye, Ning, E-mail: nye@fjirsm.ac.cn. BaGa{sub 2}GeX{sub 6}(X=S, Se): New mid-IR nonlinear optical crystals with large band gaps. United States. doi:10.1016/J.JSSC.2012.01.043.
Lin, Xinsong, Guo, Yifeng, and Ye, Ning, E-mail: nye@fjirsm.ac.cn. Thu . "BaGa{sub 2}GeX{sub 6}(X=S, Se): New mid-IR nonlinear optical crystals with large band gaps". United States. doi:10.1016/J.JSSC.2012.01.043.
@article{osti_22149902,
title = {BaGa{sub 2}GeX{sub 6}(X=S, Se): New mid-IR nonlinear optical crystals with large band gaps},
author = {Lin, Xinsong and Guo, Yifeng and Ye, Ning, E-mail: nye@fjirsm.ac.cn},
abstractNote = {New middle infrared nonlinear optical crystals of BaGa{sub 2}GeX{sub 6}(X=S, Se) have been synthesized. The structures of both BaGa{sub 2}GeS{sub 6} and BaGa{sub 2}GeSe{sub 6} were found to be isomorphous exhibiting a three-dimensional framework constructed by the parallel alignment of Ga or Ge tetrahedron groups along the c-aix. The ultraviolet transmittance spectrum indicates the short-wavelength absorption edges of BaGa{sub 2}GeS{sub 6} and BaGa{sub 2}GeSe{sub 6} are 380 nm and 440 nm, respectively. The IR transmittance spectrum shows that the absorption edge of the BaGa{sub 2}GeS{sub 6} crystal is 13.7 {mu}m. Second-harmonic generation of the powder samples was measured with a 2.05 {mu}m laser using the Kurtz and Perry technique, which showed that BaGa{sub 2}GeS{sub 6} and BaGa{sub 2}GeSe{sub 6} are phase-matched materials, and their measured SHG coefficient is {approx}2.1 and {approx}3.5 times as large as the coefficient of AgGaS{sub 2}, or 26.3 pm/V and 43.7 pm/V. - Graphical abstract: The structure of BGGS viewed along the a and c axis and an as-grown crystal. Highlights: Black-Right-Pointing-Pointer Mid-IR NLO crystals of BaGa{sub 2}GeX{sub 6}(X=S, Se) with wide band-gap have been discovered. Black-Right-Pointing-Pointer The structures were constructed by the parallel alignment of Ga or Ge tetrahedra. Black-Right-Pointing-Pointer They are phase-matchable material with their SHG coefficient of 26.3 and 43.7 pm/V.},
doi = {10.1016/J.JSSC.2012.01.043},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 195,
place = {United States},
year = {2012},
month = {11}
}