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Updated: Jun 9, 2026

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
Regulating B-O Arrangement Boosts Anisotropy in a Simple Rubidium Borate, Leading to a High-Performance UV NLO
Bingliang Cheng1,2, Wenjuan Ma1,3, Jie Zhang1
1Research Center for Crystal Materials, CAS Key Laboratory of Functional Materials and Devices for Special Environmental Conditions, Xinjiang Key Laboratory of Functional Crystal Materials, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi, China.
Abstract:
Ultraviolet nonlinear optical (UV NLO) crystals are key components in solid-state lasers. However, commercialized crystals remain limited, especially in exploring new materials within chemically simple systems poses significant challenges. Here, using the classic LiB3O5 as a template and rearranging the [B3O7] units, thereby the birefringence can be enhanced to achieve a shorter phase-matching wavelength, which leads to the successful synthesis of a competitive 266 nm UV NLO crystal RbB3O5-Cc. The crystal exhibits excellent NLO properties: a short deep-UV cut-off edge (<182 nm), a large second harmonic generation response (1.4 × KH2PO4), and a sufficient birefringence (0.067 at 1064 nm), with the shortest phase-matching wavelength down to 220 nm. This study highlights the achievement of enhanced structural integrity and improved material properties through structural modification, which provides new insights into the exploration of high-performance UV NLO crystals, and boosts confidence in developing new functional materials in simple systems.
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