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| 1 | Single-shot ultrafast multiplexed coherent diffraction imaging显示文摘Classic interferometry was commonly adopted to realize ultrafast phase imaging using pulsed lasers;however, the reference beam required makes the optical structure of the imaging system very complex, and high temporal resolution was reached by sacrificing spatial resolution. This study presents a type of single-shot ultrafast multiplexed coherent diffraction imaging technique to realize ultrafast phase imaging with both high spatial and temporal resolutions using a simple optical setup, and temporal resolution of nanosecond to femtosecond scale can be realized using lasers of different pulse durations. This technique applies a multiplexed algorithm to avoid the data division in space domain or frequency domain and greatly improves the spatial resolution. The advantages of this proposed technique on both the simple optical structure and high image quality were demonstrated by imaging the generation and evaluating the laser-induced damage and accompanying phenomenon of laser filament and shock wave at a spatial resolution better than 6.96 μm and a temporal resolution better than 10 ns. | YINGMING XU XINGCHEN PAN MINGYING SUN WENFENG LIU CHENG LIU JIANQIANG ZHU | 2022 | Photonics Research2022，10，8： | 2 |
| 2 | In-plane heterostructured Ag_(2)S-In_(2)S_(3) atomic layers enabling boosted CO_(2) photoreduction into CH_(4)显示文摘Sluggish separation and migration kinetics of the photogenerated carriers account for the low-efficiency of CO_(2) photoreduction into CH_(4). Design and construction two-dimensional (2D) in-plane heterostructures demonstrate to be an appealing approach to address above obstacles. Herein, we fabricate 2D in-plane heterostructured Ag_(2)S-In_(2)S_(3) atomic layers via an ion-exchange strategy. Photoluminescence spectra, time-resolved photoluminescence spectra, and photoelectrochemical measurements firmly affirm the optimized carrier dynamics of the In_(2)S_(3) atomic layers after the introduction of in-plane heterostructure. In-situ Fourier transform infrared spectroscopy spectra and density functional theory (DFT) calculations disclose the in-plane heterostructure contributes to CO_(2) activation and modulates the adsorption strength of CO* intermediates to facilitate the formation of CHO* intermediates, which are further protonated to CH4. In consequence, the in-plane heterostructure achieves the CH_(4) evolution rate of 20 µmol·g^(−1)·h^(−1), about 16.7 times higher than that of the In2S3 atomic layers. In short, this work proves construction of in-plane heterostructures as a promising method for obtaining high-efficiency CO_(2)-to-CH_(4) photoconversion properties. | Weiwei Shao Shumin Wang Juncheng Zhu Xiaodong Li Xingchen Jiao Yang Pan Yongfu Sun Yi Xie | 2021 | Nano Research2021，14，12： | 1 |
| 3 | Wavefront measurement techniques used in high power lasers显示文摘The properties of a series of phase measurement techniques,including interferometry,the Hartmann–Shack wavefront sensor,the knife-edge technique,and coherent diffraction imaging,are summarized and their performance in high power laser applications is compared.The advantages,disadvantages,and application ranges of each technique are discussed. | Haiyan Wang Cheng Liu Xiaoliang He Xingchen Pan Shenlei Zhou Rong Wu Jianqiang Zhu | 2014 | High Power Laser Science and Engineering2014，2，3： | 1 |
| 4 | An online diagnosis technique for simultaneous measurement of the fundamental, second and third harmonics in one snapshot显示文摘A three-wavelength coherent-modulation-imaging(CMI)technique is proposed to simultaneously measure the fundamental,second and third harmonics of a laser driver in one snapshot.Laser beams at three wavelengths(1053 nm,526.5 nm and 351 nm)were simultaneously incident on a random phase plate to generate hybrid diffraction patterns,and a modified CMI algorithm was adopted to reconstruct the complex amplitude of each wavelength from one diffraction intensity frame.The validity of this proposed technique was verified using both numerical simulation and experimental analyses.Compared to commonly used measurement methods,this proposed method has several advantages,including a compact structure,convenient operation and high accuracy. | Xue Dong Xingchen Pan Cheng Liu Jianqiang Zhu | 2019 | High Power Laser Science and Engineering2019，7，3： | 1 |
| 5 | Plastics-to-syngas photocatalysed by Co-Ga_(2)O_(3) nanosheets显示文摘Plastics take hundreds of years to degrade naturally,while their chemical degradation typically requires high temperature and pressure.Here,we first utilize solar energy to realize the sustainable and efficient plastic-to-syngas conversion with the aid of water at ambient conditions.As an example,the commercial plastic bags could be efficiently photoconverted into renewable syngas by Co-Ga_(2) O_(3) nanosheets,with hydrogen and carbon monoxide formation rates of 647.8 and 158.3μmol g^(-1) h^(-1).In situ characterizations and labelling experiments unveil water is photoreduced into hydrogen,while non-recyclable plastics including polyethylene bags,polypropylene boxes and polyethylene terephthalate bottles are photodegraded into carbon dioxide,which is further selectively photoreduced into carbon monoxide.In-depth investigation illustrates that the efficiency of syngas production mainly depends on the carbon dioxide reduction process and hence photo catalysts of high carbon dioxide reduction activity should be designed to promote the efficiency of plastic-to-syngas conversion in the future.The concept for the photoreforming of non-recyclable plastics into renewable syngas helps to eradicate’white pollution’and alleviate the energy crisis simultaneously. | Jiaqi Xu Xingchen Jiao Kai Zheng Weiwei Shao Shan Zhu Xiaodong Li Junfa Zhu Yang Pan Yongfu Sun Yi Xie | 2022 | National Science Review2022，9，9： | 0 |
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