Borosilicate Crystal LaBSiO 5 : A New Promising Ultraviolet Quasiphase Matching Material

Nonlinear optical crystals with ferroelectricity, which could realize ultraviolet/deep‐ultraviolet coherent output by the quasiphase matching technology, are expected to be promising candidates for the new type of ultraviolet/deep‐ultraviolet nonlinear optical materials. Here, a new borosilicate cry...

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Bibliographic Details
Published in:Advanced optical materials 2021-05, Vol.9 (10)
Main Authors: Sha, Hongyuan, Su, Rongbing, Xiong, Zheyao, Wang, Zujian, Shan, Pai, He, Chao, Yang, Xiaoming, Long, Xifa
Format: Article
Language:English
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Summary:Nonlinear optical crystals with ferroelectricity, which could realize ultraviolet/deep‐ultraviolet coherent output by the quasiphase matching technology, are expected to be promising candidates for the new type of ultraviolet/deep‐ultraviolet nonlinear optical materials. Here, a new borosilicate crystal, LaBSiO 5 , is found, which is superior to the famous commercial quasiphase matching crystals, LiNbO 3 , KTiOPO 4 , and LaBGeO 5 in performances. LaBSiO 5 crystal exhibits excellent optical and electrical properties, including a short absorption cutoff (186 nm), a moderate second‐harmonic generation response (≈1.1 × KH 2 PO 4 ), and the ferroelectric polarization reversal (coercive field ≈ 36.98 kV cm −1 , remnant polarization ≈ 1.83 µC cm −2 ). Besides, no layering tendency is found during the process of crystal growth. Therefore, LaBSiO 5 crystal is a potential ultraviolet quasiphase matching material.
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.202100080