A double acousto-optic monochromator for the uv region with improved optical characteristics based on a KDP single crystal

Epikhin, V. M.; Rokos, I. A.

doi:10.1134/1.1690044

Cited by 7 publications

(2 citation statements)

References 9 publications

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“…Potassium dihydrogen phosphate (KDP) is an important material − due to its excellent electrical and optical properties such as superior photoelectric/piezoelectric capability, outstanding frequency-doubling effect, and high nonlinear conversion efficiency. − In the laser ignition of inertial confinement fusion (ICF), − KDP takes an irreplaceable position. The requirement on the processing quality of a KDP crystal in these high-energy laser systems is extremely high.…”

Section: Introductionmentioning

confidence: 99%

Effect of Anisotropy of Potassium Dihydrogen Phosphate Crystals on Its Deformation Mechanisms Subjected to Nanoindentation

Yang

Zhang

2021

ACS Appl. Mater. Interfaces

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Potassium dihydrogen phosphate (KDP) is an important nonlinear material due to its excellent physical and optical properties. However, it is also a difficult-to-machine material due to its complex anisotropic microstructure. To better understand the deformation mechanisms under external stresses, this paper aims to carry out systematic nanoindentation simulations using molecular dynamics (MD). To facilitate the structural characterization of KDP, a machine learning-based method was developed. The results showed that the subsurface damage is obviously anisotropic. On the (001) surface, both tetragonal and monoclinic phases appear simultaneously and part of the monoclinic phase transfers to the tetragonal phase. The generated phases close to the surface undergo amorphization and are squeezed out to form pile-ups. On the (100) surface, however, an orthorhombic phase emerges directly from the original structure rather than transforming through the monoclinic phase. No amorphization happens and no pile-ups appear in this case. The first “pop-in” in the load–displacement curve of nanoindentation signified the emergence of phase transformation under the combined hydrostatic and shear stresses. After unloading, the recovery of the deformed KDP is also anisotropic. The maximum recovery takes place when the indentation is on the (100) surface.

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Section: Introductionmentioning

confidence: 99%

Effect of Anisotropy of Potassium Dihydrogen Phosphate Crystals on Its Deformation Mechanisms Subjected to Nanoindentation

Yang

Zhang

2021

ACS Appl. Mater. Interfaces

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“…[1][2][3][4] KDP has been widely used in many technological fields, such as laser frequency conversion, high-speed Q-switching, optical communication, and optical signal processing. [5][6][7][8][9] At the present, one can easily obtain a large aperture KDP with the rapid growth technology. 10,11 To use a KDP component in high-energy laser systems [12][13][14][15] ; however, it is required to minimize the surface and subsurface damages which are mostly introduced in a mechanical surface finishing process.…”

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confidence: 99%

Characterization and criteria of phase transformations and lattice slipping in potassium dihydrogen phosphate crystals

Yang

Zhang

2021

J. Am. Ceram. Soc.

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Potassium dihydrogen phosphate (KDP) is an important nonlinear optical material. Since the 1930s, this material has attracted significant attention because of its excellent physical and optical properties. [1][2][3][4] KDP has been widely used in many technological fields, such as laser frequency conversion, high-speed Q-switching, optical communication, and optical signal processing. [5][6][7][8][9] At the present, one can easily obtain a large aperture KDP with the rapid growth technology. 10,11 To use a KDP component in high-energy laser systems [12][13][14][15] ; however, it is required to minimize the surface and subsurface damages which are mostly introduced in a mechanical surface finishing process. An ideal outcome is that the manufactured KDP component is totally damage free. However, KDP is one of the most difficult-to-handle materials due to its fragility, unstable microstructure, and complicated mechanical behavior. 16,17 A low-quality surface or subsurface can easily reduce the laser-damage threshold (LDT) and the service life of a KDP component. 18,19 How to overcome the difficulties and improve the machinability of KDP has been challenging.There are many issues in relation to the damage-free manufacture of a KDP component, among which the most critical is its complicated deformation mechanisms under external loading. At stressing, a KDP crystal can undergo

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Application of Acousto-Optical Hyperspectral Imaging for Skin Cancer Diagnostics

Пожар

Мачихин

Myakinin

et al. 2020

Multimodal Optical Diagnostics of Cancer

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A double acousto-optic monochromator for the uv region with improved optical characteristics based on a KDP single crystal

Cited by 7 publications

References 9 publications

Effect of Anisotropy of Potassium Dihydrogen Phosphate Crystals on Its Deformation Mechanisms Subjected to Nanoindentation

Effect of Anisotropy of Potassium Dihydrogen Phosphate Crystals on Its Deformation Mechanisms Subjected to Nanoindentation

Characterization and criteria of phase transformations and lattice slipping in potassium dihydrogen phosphate crystals

Application of Acousto-Optical Hyperspectral Imaging for Skin Cancer Diagnostics

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