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542 results on '"Jiang, Xiao-Ming"'

118. Mo/SiO2 multilayers for soft x-ray optical applications

Author

Wang, Feng-Ping, Wang, Pei-Xuan, Lu, Kun-Quan, Fang, Zheng-Zhi, Gao, Min, Duan, Xiao-Feng, Cui, Ming-Qi, Ma, Hong-Ji, and Jiang, Xiao-Ming

Subjects
X-rays -- Research, Radiography -- Research, Molybdenum -- Research, Silicon compounds -- Research, Oxides -- Research, Reflectance -- Research, Optics -- Research, Physics
Abstract

Keen research interest has ben focused on the production of x-ray multilayers for short wavelength range because of the potential applications of such multilayers in a variety of technologies. A study was therefore conducted to investigate the microstructure and profiles of Mo/SiO2 multilayers. Among other results, it was found that MoSiO2 multilayers with very good composition modulation structures and smooth/acute interfaces between Mo and SiO2 may form by magnetron sputtering.

Published
1999

125. Large Second Harmonic Generation (SHG) Effect and High Laser‐Induced Damage Threshold (LIDT) Observed Coexisting in Gallium Selenide

Author

Guo, Sheng‐Ping, primary, Cheng, Xiyue, additional, Sun, Zong‐Dong, additional, Chi, Yang, additional, Liu, Bin‐Wen, additional, Jiang, Xiao‐Ming, additional, Li, Shu‐Fang, additional, Xue, Huai‐Guo, additional, Deng, Shuiquan, additional, Duppel, Viola, additional, Köhler, Jürgen, additional, and Guo, Guo‐Cong, additional

Published
2019
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129. Ternary AGa5S8(A = K, Rb, Cs): Promising infrared nonlinear optical materials rationally realized by “one-for-multiple substitution” strategy

Author

Chen, Wen-Fa, Jiang, Xiao-Ming, Pei, Shao-Min, Zhang, Ming-Shu, Liu, Bin-Wen, and Guo, Guo-Cong

Abstract

Commercially available infrared (IR) nonlinear optical (NLO) materials, such as diamond-like AgGaQ2(Q = S, Se), display large NLO coefficients but relatively low laser-induced damage thresholds (LIDTs), which seriously hinder their widespread laser applications. Herein, the “one-for-multiple substitution” strategy, namely, [SZn46++ 5Zn2+⇒ A++ 5Ga3+] (A = K, Rb and Cs), is applied on the diamond-like zinc-blende ZnS, and affords three new polar ternary crystals AGa5S8(A = K, Rb and Cs) through the solid-state method. These compounds inherit the diamond-like anionic backbone framework in ZnS where the NLO functional motifs GaS4are arranged in a parallel manner. This characteristic accounts for the remarkable phase-matchable second-harmonic generation intensities (1.1–1.2 × AgGaS2). In addition, the inclusion of the highly electropositive A+cations affords a band gap ranging from 3.10 to 3.37 eV, which facilitates the improvement of LIDT (9.3–12.4 × AgGaS2). To the best our knowledge, crystals AGa5S8(A = K, Rb and Cs) are the first series of ternary A-inclusion chalcogenides with large second-harmonic generation responses (≥1.0 × AgGaS2) and wide band gaps (≥3.0 eV), fulfilling the rigorous requirements of outstanding IR NLO materials. In addition, the “one-for-multiple substitution” strategy presents the great significance of diamondlike structure evolution and provides a remarkable opportunity to achieve NLO materials.

Published
2022
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133. Disorder‐Induced Phonon Localization in Incipient Ferroelectric (Ni1/3Nb2/3)xTi1−xO2 Solid Solutions.

Author

Wang, Jian, Gao, Dandan, Xie, Jiyang, Jiang, Xiao-Ming, and Hu, Wanbiao

Subjects
ANDERSON localization, PHONONS, SOLID solutions, PERMITTIVITY, RAMAN effect, FOURIER transforms, POLARONS
Abstract

The phonon behavior in incipient ferroelectric (Ni1/3Nb2/3)xTi1−xO2 ceramic solid solutions is investigated with combined Raman, Fourier transformed infrared (FTIR), and dielectric spectroscopy. The (Ni+Nb) incorporation into rutile TiO2 leads to the Raman and infrared modes broadening, the Gaussian‐type Raman peak of A2u(LO) mode, and the dielectric constant (at 14 K) of different compositions being proportional to the mole ratio of Ti cations. It suggests that, with increasing (Ni + Nb)‐substitution, the cationic disorder gradually develops and the disorder‐induced phonon localization occurs. In particular, the soft A2u mode appears to be localized to Ti‐containing regions. This work demonstrates that the combined Raman, FTIR, and dielectric analysis can effectively probe the cationic disorder and phonon localization behaviors in incipient ferroelectric (Ni1/3Nb2/3)xTi1−xO2 and provides an experimental evidence of phonon localization in 3D disordered systems with mass and spring constant disorder, which enriches the understanding of the Anderson localization in vibrational systems. [ABSTRACT FROM AUTHOR]

Published
2020
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134. Ba13In12Zn7S38 and Ba12In12Zn8Se38: infrared nonlinear optical chalcogenides designed by zinc-induced non-centrosymmetry transformation.

Author

Yang, Long-Qi, Ye, Run, Jiang, Xiao-Ming, Liu, Bin-Wen, Zeng, Hui-Yi, and Guo, Guo-Cong

Abstract

Drawbacks, such as low laser damage threshold (LDT), of existing IR nonlinear optical (NLO) materials necessitate the exploration of new candidates. Promising candidates should have been found in the Ba–In–Q (Q = S, Se) system close to the well-known IR NLO (Ba, Sr)–(Ga, Al)–Q system, but all known Ba–In–Q phases are centrosymmetric (CS), precluding them from being NLO-active. Two new chalcogenides, Ba13Zn7In12S38 (1) and Ba12Zn8In12Se38 (2), were obtained by the introduction of d10 Zn2+ in the Ba–In–Q (Q = S, Se) system, where mixing Zn2+ in In3+ sites resulted in non-centrosymmetric transformation. Their structures comprised rare impeller-like chalcogenide units containing four-membered tetrahedral cluster or T2-supertetrahedra blades. Remarkably, strong phase-matchable second harmonic generation efficiency (0.6 × AGS), high LDT (24 × AGS), wide IR transparency region, and congruent melting characteristic make 1 be a good candidate for high power IR-NLO applications. The current work provided an avenue to design IR NLO materials in NLO-active motifs containing CS chalcogenide systems by the incorporation of d10 metals. [ABSTRACT FROM AUTHOR]

Published
2020
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135. Li[LiCs2Cl][Ga3S6]: A Nanoporous Framework of GaS4 Tetrahedra with Excellent Nonlinear Optical Performance.

Author

Liu, Bin‐Wen, Jiang, Xiao‐Ming, Li, Bing‐Xuan, Zeng, Hui‐Yi, and Guo, Guo‐Cong

Subjects
*SECOND harmonic generation, *MATHEMATICAL complexes, *TETRAHEDRA, *PYROLYTIC graphite
Abstract

A large nonlinear optical (NLO) coefficient and a wide band gap are two crucial but contradictory parameters that are difficult to achieve simultaneously in a single infrared (IR) NLO compound. A salt‐inclusion chalcogenide (SIC), Li[LiCs2Cl][Ga3S6] (1), was prepared that presents a nanosized tunnel framework constructed from monotype chalcogenide tetrahedra. Highly oriented covalent GaS4 tetrahedra in the host lead to a moderate second harmonic generation response (0.7 AgGaS2), and ionic guests effectively broaden the band gap to the widest value (4.18 eV) among all IR NLO chalcogenides, thereby achieving a remarkable balance between NLO efficiency and band gap. [ABSTRACT FROM AUTHOR]

Published
2020
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136. Strong nonlinear optical effect attained by atom-response-theory aided design in the Na2MIIMIV2Q6 (MII = Zn, Cd; MIV = Ge, Sn; Q = S, Se) chalcogenide system.

Author

Ye, Run, Cheng, Xiyue, Liu, Bin-Wen, Jiang, Xiao-Ming, Yang, Long-Qi, Deng, Shuiquan, and Guo, Guo-Cong

Abstract

Two new phases, Na2MSn2Se6 (M = Zn/Cd), exhibiting overall high quality parameters for infrared nonlinear optical applications were synthesized based on a new atom response theory aided searching approach. [ABSTRACT FROM AUTHOR]

Published
2020
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147. AMnAs3S6(A = Cs, Rb): Phase-Matchable Infrared Nonlinear Optical Functional Motif [As3S6]3–Obtained via Surfactant–Thermal Method

Author

Ye, Run, Liu, Bin-Wen, Jiang, Xiao-Ming, Lu, Jian, Zeng, Hui-Yi, and Guo, Guo-Cong

Abstract

Exploration of a new nonlinear optical (NLO)-active functional motif is important in the rational design of promising infrared (IR) NLO materials. Compared with typical tetrahedral MQ4(M = IIB, III, IV metals; Q = S, Se) motifs, MQ3(M = As, Sb) pyramids favor high second-harmonic generation (SHG) efficiency while frequently hindering phase matching (PM) because of excessively large optical anisotropy. The surfactant–thermal method was first adopted to achieve PM in MQ3-containing systems and synthesize mixed covalent–ionic IR NLO materials. Two new thioarsenates of AMnAs3S6(A = Cs, Rb) exhibiting strong PM SHG efficiencies comparable to commercial AGS and laser-induced damage thresholds of one order higher than AGS were obtained. The [As3S6]3–unit in their structures is an unprecedented NLO-active functional motif, which can be useful in designing new IR NLO compounds with large SHG efficiency. In addition, the surfactant–thermal method provides a new general strategy for synthesizing new IR NLO materials.

Published
2020
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149. Large Second-Harmonic Generation Responses Achieved by the Dimeric [Ge2Se4(μ-Se2)]4– Functional Motif in Polar Polyselenides A4Ge4Se12 (A = Rb, Cs)

Author

Liu, Bin-Wen, primary, Zhang, Min-Yi, additional, Jiang, Xiao-Ming, additional, Li, Shu-Fang, additional, Zeng, Hui-Yi, additional, Wang, Guo-Qiang, additional, Fan, Yu-Hang, additional, Su, Yong-Fei, additional, Li, Chunsen, additional, Guo, Guo-Cong, additional, and Huang, Jin-Shun, additional

Published
2017
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