Investigations on optical parameters and lattice structures of KDP crystals irradiated by nanosecond laser

被引：0

作者：

Gao, Yang ^{[1
]}

Zhang, Liqing ^{[1
]}

Liu, Shuang ^{[1
]}

Long, Siyu ^{[1
]}

Wang, Qinwei ^{[1
]}

Ma, Tingting ^{[1
]}

Zhou, Qiang ^{[1
]}

Qiu, Rong ^{[1
]}

机构：

[1] Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang

来源：

Optical Materials | 2025年 / 168卷

基金：

中国国家自然科学基金;

关键词：

KDP crystals; Lattice structures; Nanosecond laser irradiations; Optical parameters;

D O I：

10.1016/j.optmat.2025.117366

中图分类号：

学科分类号：

摘要：

KDP, as a key nonlinear optical crystal, is indispensable in ICF engineering. In this work, an investigation on optical parameters and lattice structures of KDP crystals after irradiation with 355 and 1064 nm ns lasers under different energy densities was conducted by XRD and WDD models derived from UV–Vis spectra. WDD models revealed that compared with un-irradiated crystals, both lasers induced a significant decrease in various optical parameters of KDP crystals, including the effective single oscillator energy (E0), dispersion energy (Ed), zero-frequency refractive index (n0), optical moments (M-1 and M-3) and oscillator strength (f). With increasing laser energy density, these optical parameters first increase, and then decline. XRD results showed that diffraction peaks of the (200), (400), and (600) lattice planes and their splitting peaks were observed in un-irradiated KDP crystals. After irradiation with both laser at lower energy densities, the splitting peaks dramatically weakened and several new peaks emerged, in conjunction with a slight enhancement in the diffraction intensity of three main peaks. Nevertheless, under higher energy density irradiation, a distinct increment in their FWHM of main peaks was displayed, accompanied by a complete disappearance in their splitting peaks. However, no other phosphate phases were observed in XRD patterns. Most notably, 355 nm laser irradiation induced more pronounced variations in optical parameters and lattice characterizations of KDP crystals than that from 1064 nm at identical energy densities. And the underlying mechanisms were detected in detail. © 2025 Elsevier B.V.

引用

共 49 条

[1]

Rashkovich L.N., KDP-family Single Crystals, (1991)

[2]

Li Y., Lei G.D., Li X.C., Sun S.T., Zhao X., Zhang L.S., Xu M.X., Liu B.A., Sun X., Hybrid density functional theory calculations for surface damaged phosphate products of laser irradiated KDP crystals, CrystEngComm, 26, 3, pp. 286-292, (2024)

[3]

Pritula I., Kosinova A., Kolybayeva A., Puzikov V., Bondarenko S., Tkachenko V., Tsurikov V., Fesenko O., Optical, structural and microhardness properties of KDP crystals grown from urea-doped solutions, Mater. Res. Bull., 43, 10, pp. 2778-2789, (2008)

[4]

Xu M.X., Liu B.A., Zhang L.S., Ren H.K., Gu Q.T., Sun X., Wang S.L., Xu X.G., Progress on deuterated potassium dihydrogen phosphate (DKDP) crystals for high power laser system application, Light Sci. Appl., 11, 9, pp. 1979-1993, (2022)

[5]

Lin C.C., Chen Y., Yao Y.X., Yang Y., An experimental investigation on the anisotropic brittle-ductile transition in trapezoidal modulation cutting of KDP crystal, Mater. Lett., 385, (2025)

[6]

Lu X., Hong W., Liu T.Y., Li H.F., Wang J.H., Mechanistic study of LIDT reduction in KH2PO4 with Yi predicted by density functional theory, J. Comput. Chem., 46, 6, (2025)

[7]

Zhang L., Wu Y.L., Liu Y., Li H., DFT study of single water molecule adsorption on the (100) and (101) surfaces of KH2PO4, RSC Adv., 7, 42, pp. 26170-26178, (2017)

[8]

Chen D.Y., Wang B., Wang H., Zheng L.L., Zhang H., Qi H.J., Shao J.D., Rapid growth of a cuboid DKDP (KDxH2-xPO4) crystal, Cryst. Growth Des., 19, 5, pp. 2746-2750, (2019)

[9]

Li J.L., Bai J.Y., Sui T.T., Cao X.Z., Xu M.X., Sun X., Ju X., Study on the defects of KDP crystal with different states by the positron spectroscopy method, CrystEngComm, 25, 20, pp. 3051-3059, (2023)

[10]

Hu J.R., Yin Z.Y., Cheng J., Chen J.X., Zhao L.J., Lei H.Q., Chen G., Chen M.J., Evolution of intrinsic defect density in UV laser conditioning at the KDP crystal stress affected zone and its role in improving the laser induced damage threshold, J. Mater. Chem. C, 13, 9, pp. 4737-4748, (2025)

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