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Crystals 2017, 7(4), 104; doi:10.3390/cryst7040104

Structure and Optical Properties of K0.67Rb1.33Al2B2O7 Crystal

1
Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2
University of the Chinese Academy of Sciences, Beijing 100049, China
*
Author to whom correspondence should be addressed.
Academic Editors: Ning Ye and Rukang Li
Received: 20 January 2017 / Revised: 23 March 2017 / Accepted: 4 April 2017 / Published: 7 April 2017
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Abstract

A UV nonlinear optical (NLO) crystal K0.67Rb1.33Al2B2O7 (KRABO) has been obtained by the top-seeded solution growth method for the first time. Its structure is formed of coplanar [BO3]3− triangle groups and [Al2O7]8− groups, which are built from two [AlO4]5− tetrahedra sharing one vertex. Rb and K atoms have the same coordinates and locate between each layer in a disorderly fashion. The crystal has a larger NLO effect compared with its analog K2Al2B2O7 (KABO), as evidenced by powder second harmonic generation (SHG) test. The shortest SHG phase-matching wavelength is down to 231 nm according to the first-principle calculation, which indicates that KRABO is possible for the fourth harmonic generation of Nd:YAG at 266 nm. View Full-Text
Keywords: chloride borates; nonlinear optical crystal; crystal growth chloride borates; nonlinear optical crystal; crystal growth
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Huang, Q.; Liu, L.; Xia, M.; Yang, Y.; Guo, S.; Wang, X.; Lin, Z.; Chen, C. Structure and Optical Properties of K0.67Rb1.33Al2B2O7 Crystal. Crystals 2017, 7, 104.

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