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

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

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  • NSTL
  • Elsevier
A mercury-based sulfate nonlinear optical (NLO) material, HgSO4, was successfully grown using a hydrothermal method. It crystallizes in the polar space group Pmn21 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 × 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.

Crystal growthMid-infraredNonlinear opticsSecond harmonic generationSulfates

Han Y.、Zhao X.、Xu F.、Li B.、Luo M.、Ye N.

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Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Tianjin Key Laboratory of Functional Crystal Materials Institute of Functional Crystal Tianjin University of Technology

2022

10.1016/j.jallcom.2022.163727

Journal of Alloys and Compounds

Journal of Alloys and Compounds

EISCI
ISSN：0925-8388
年,卷(期)：2022.902
  • 5
  • 63