Fang Tan

Laser Research Institute

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Yuqiu Gu

Yangzhou University

Yue Yang

China Agricultural University

Weimin Zhou

China Academy of Engineering Physics

Bin Zhu

Jiangxi Transportation Research Institute

Yonghong Yan

China Academy of Engineering Physics

Shaoyi Wang

China Academy of Engineering Physics

Minghai Yu

China Academy of Engineering Physics

Yuchi Wu

China Academy of Engineering Physics

Feng Lu

Southern Medical University

Kegong Dong

Chinese Academy of Engineering

Cooperative Institutions

China Academy of Engineering Physics

102

Laser Fusion Research Center

Chinese Academy of Sciences

Shanghai Jiao Tong University

University of Chinese Academy of Sciences

Laser Research Institute

Peking University

Tsinghua University

Institute of High Energy Physics

Changchun University of Science and Technology

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Design and optimization of a large mode field, low crosstalk homogeneous six-core photonic crystal fiber

Journal of Non-Crystalline Solids (2025)

D.Y. Chen Fang Tan Zhitao Zhang Yanke Zhang S.B. Ge

Crosstalk

Mode volume

10.1016/j.jnoncrysol.2024.123383

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Citations (0)

Author response for "Electron paramagnetic resonance and photoluminescence study on local structure of Gd<sup>3+</sup> ions in Gd-doped CaF<sub>2</sub> crystals"

Shirui Luo Fang Tan Dapeng Jiang Honggang Liu Tingyu Liu

10.1039/d4ra08622h/v2/response1

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Enhanced Thomson scattering x-ray sources with flying focus laser pulse

AIP Advances (2023)

Hansheng Ye Yuqiu Gu Quanping Fan Xiaohui Zhang Shaoyi Wang

X-ray source based on the Thomson scattering of laser interacting with energetic electron beams features high photon energy, small spot size, and good collimation. However, the photon number is insufficient for practical application because of the small cross section of the Thomson scattering. To solve this problem, here, we replace a traditional Gaussian laser pulse with a flying focus laser pulse to extend interaction length and restrain nonlinear effects. Simulation results show that the scattered photon number can be increased by about 25 and 2 times for high and low energy lasers, respectively. In particular, a 1010 photon number can be generated with a 10 J flying focus laser pulse, and the energy spread can also be greatly reduced for high energy laser, from a broad spectrum to a monoenergetic peak. Combining these two advantages, the peak spectrum brightness of x ray is 3 × 108 photons/keV at 240 keV, which is about three orders of magnitude more than the traditional case.

Thomson scattering

Collimated light

10.1063/5.0130819

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Citations (3)

Towards high-energy, high-resolution computed tomography via a laser driven micro-spot gamma-ray source

Scientific Reports (2018)

Yu-Chi Wu Bin Zhu G. Li Xianfei Zhang Miao Yu

Computed Tomography (CT) is a powerful method for non-destructive testing (NDT) and metrology awakes with expanding application fields. To improve the spatial resolution of high energy CT, a micro-spot gamma-ray source based on bremsstrahlung from a laser wakefield accelerator was developed. A high energy CT using the source was performed, which shows that the resolution of reconstruction can reach 100 μm at 10% contrast. Our proof-of-principle demonstration indicates that laser driven micro-spot gamma-ray sources provide a prospective way to increase the spatial resolution and toward to high energy micro CT. Due to the advantage in spatial resolution, laser based high energy CT represents a large potential for many NDT applications.

Industrial computed tomography

10.1038/s41598-018-33844-7

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Citations (267)

Virtual source approach for maximizing resolution in high-penetration gamma-ray imaging

Matter and Radiation at Extremes (2024)

Yuchi Wu Shaoyi Wang Bin Zhu Yonghong Yan Minghai Yu

High-energy gamma-ray radiography has exceptional penetration ability and has become an indispensable nondestructive testing (NDT) tool in various fields. For high-energy photons, point projection radiography is almost the only feasible imaging method, and its spatial resolution is primarily constrained by the size of the gamma-ray source. In conventional industrial applications, gamma-ray sources are commonly based on electron beams driven by accelerators, utilizing the process of bremsstrahlung radiation. The size of the gamma-ray source is dependent on the dimensional characteristics of the electron beam. Extensive research has been conducted on various advanced accelerator technologies that have the potential to greatly improve spatial resolution in NDT. In our investigation of laser-driven gamma-ray sources, a spatial resolution of about 90 µm is achieved when the areal density of the penetrated object is 120 g/cm2. A virtual source approach is proposed to optimize the size of the gamma-ray source used for imaging, with the aim of maximizing spatial resolution. In this virtual source approach, the gamma ray can be considered as being emitted from a virtual source within the convertor, where the equivalent gamma-ray source size in imaging is much smaller than the actual emission area. On the basis of Monte Carlo simulations, we derive a set of evaluation formulas for virtual source scale and gamma-ray emission angle. Under optimal conditions, the virtual source size can be as small as 15 µm, which can significantly improve the spatial resolution of high-penetration imaging to less than 50 µm.

Penetration (warfare)

10.1063/5.0179781

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Advances in quasi-isentropic compression experiments at institute of fluid physics of CAEP

The European Physical Journal Special Topics (2012)

G. Wang Zhao Jian Hongtao Zhang Chengwei Sun Fang Tan

Isentropic process

10.1140/epjst/e2012-01597-y

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Citations (9)

Pair production by high intensity picosecond laser interacting with thick solid target at XingGuangIII

High Energy Density Physics (2017)

Yuchi Wu Kegong Dong Yonghong Yan Bin Zhu Tiankui Zhang

Picosecond

Intensity

10.1016/j.hedp.2017.03.006

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Citations (5)

Study on metal ejection under laser shock loading

Acta Physica Sinica (2012)

Jianting Xin Gu Yu-Qiu Li Ping Luo Xuan 蒋柏彬 Jiang Baibin

Dynamic response of metal to shock loading plays an improtant role in the fields of civil engineering, aeronautics, etc. The forming process of ejection of metal under shock loading, including micro-jet, fragmentation and micro-spall remain to be studied. The present work is devoted to laser-shock experiments in metal ejection on the SGIII laser facility. And the fragment recovery and post-test evaluation of the fragment-size distribution are achieved.

Spall

Fragmentation

10.7498/aps.61.236201

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Citations (2)

High-brightness betatron X-ray source driven by SULF-1 PW laser

High Power Laser Science and Engineering (2025)

Hong Zhang Zhigang Deng Hai Jiang Shaoyi Wang Jiang Wei

Betatron

10.1017/hpl.2025.17

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Preparation and optical performance detection of acid-leaching optical fiber image bundle

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2009)

Dechun Zhou Fengxia Yu Fang Tan LU Jing-juan

This article determines three kinds of materials: core and clad glass,cladding glass,acid-leaching glass and the match ability of physical and chemical performances of these materials is described.. The quantitative relationship between concentration, temperature, acid type and resolution time are studied to determine a series of suitable technical parameters. Many effective methods are identified to improve optical properties through a lager number of detecting and analyzing the properties of fiber image bundle, which lays a good foundation for wider application.

Cladding (metalworking)

10.1117/12.831041

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Citations (4)