HgSO4: An excellent mid-infrared sulfate nonlinear optical crystal with wide band gap and strong second harmonic generation response

被引：13

作者：

Han, Yinglei ^{[1
,2
]}

Zhao, Xin ^{[1
]}

Xu, Feng ^{[1
]}

Li, Bingxuan ^{[1
]}

Ye, Ning ^{[3
]}

Luo, Min ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Optoelect Mat Chem & Phys, Fuzhou 350002, Fujian, Peoples R China

[2] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

[3] Tianjin Univ Technol, Inst Funct Crystal, Tianjin Key Lab Funct Crystal Mat, Tianjin 300384, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 902卷

基金：

中国国家自然科学基金;

关键词：

Nonlinear optics; Sulfates; Mid-infrared; Second harmonic generation; Crystal growth; DAMAGE; POLAR; PRINCIPLES; FLUORIDE; ZNGEP2; RB; CS;

D O I：

10.1016/j.jallcom.2022.163727

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A mercury-based sulfate nonlinear optical (NLO) material, HgSO4, was successfully grown using a hydro-thermal method. It crystallizes in the polar space group Pmn2(1) and forms a three-dimensional spatial network structure consisting of [HgO8] polyhedras and [SO4] polyhedras. The powder second harmonic generation (SHG) measurement showed that HgSO4 is a phase-matching material and has a very strong SHG efficiency of 11 times that of KDP. Such a remarkable SHG response is due to the well-ordered arrangement of the distorted [HgO8] and [SO4] polyhedras. In parallel, large bandgap (4.13 eV) and laser damage threshold (26.5 x AgGaS2) are exhibited. Further characterizations showed that this compound possesses a large birefringence and a wide transmission window from the near-UV to mid-IR, suggesting that HgSO4 may be an excellent mid-IR NLO crystal. (C) 2022 Elsevier B.V. All rights reserved.

引用

页数：8

共 63 条

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