Baoliang Wang

Chinese Academy of Sciences

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Yong Li

Institute of Mountain Hazards and Environment

Dao Xiang

Shanghai Jiao Tong University

Haixiao Deng

Shanghai Institute of Applied Physics

Jingjing Liu

Wuhan University of Technology

Zenggong Jiang

Shanghai Advanced Research Institute

Taihe Lan

Chinese Academy of Sciences

Zhen Wang

University of Chinese Academy of Sciences

Wenyan Zhang

Chinese Academy of Sciences

Xingtao Wang

Tianjin University

Zhentang Zhao

Chinese Academy of Sciences

Cooperative Institutions

Chinese Academy of Sciences

University of Chinese Academy of Sciences

Shanghai Advanced Research Institute

Shanghai Institute of Applied Physics

Institute of Mountain Hazards and Environment

Zhejiang University

Southwest Jiaotong University

University of Science and Technology of China

Sichuan University

Wuhan University of Technology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Debris flow density determined by grain composition

Landslides (2017)

Baoliang Wang Yong Li Daochuan Liu Jingjing Liu

Debris flow

10.1007/s10346-017-0912-x

Cite

Citations (27)

Coherent and ultrashort soft x-ray pulses from echo-enabled harmonic cascade free-electron lasers

Optica (2022)

Chao Feng Tao Liu Si Chen Kaishang Zhou Kaiqing Zhang

It is a long-standing challenge for laser technologies to generate intense fully coherent pulses in the x-ray regime. Here, we demonstrate an external seeding mechanism, termed echo-enabled harmonic cascade (EEHC) for generating coherent and ultrashort soft x-ray pulses. The mechanism uses echo-enabled harmonic generation as the first stage, producing intense extreme ultraviolet pulses that seed the second stage x-ray free-electron laser (FEL) with the high-gain harmonic generation setup. Benefiting from the low sensitivity to electron-beam imperfections of EEHC, we generated high-power nearly transform-limited soft x-ray pulses. We have also demonstrated a unique feature of EEHC in generating isolated few-femtosecond-long x-ray pulses. The supreme up-frequency conversion efficiency and flexible pulse length control of this EEHC mechanism allow us to exceed the current limitations of seeded FELs while preserving the coherence of the seed. Our results are a step towards fully coherent and ultrashort x-ray lasers and could enable the extension of nonlinear optical techniques to shorter wavelengths.

Extreme ultraviolet

10.1364/optica.466064

Cite

Citations (19)

Relationship between grain composition and debris flow characteristics: a case study of the Jiangjia Gully in China

Landslides (2014)

Yong Li Jingjing Liu Fenghuan Su Jiang Xie Baoliang Wang

Debris flow

Hyperconcentrated flow

Deposition

10.1007/s10346-014-0475-z

Cite

Citations (55)

Environmental management at county level based on livestock supporting capacity of cropland: a case study of Shouguang city.

Huanjing gongcheng jishu xuebao (2015)

Shang HongLei Zhou Ting-ting Gao XinTing Zheng Ye Baoliang Wang

Source

Cite

Citations (0)

Coherent extreme ultraviolet free-electron laser with echo-enabled harmonic generation

Physical Review Accelerators and Beams (2019)

Chao Feng Haixiao Deng Meng Zhang Xingtao Wang Si Chen

The echo-enabled harmonic generation (EEHG) scheme holds promising prospects for efficiently generating intense coherent radiation at very high harmonics of a conventional ultraviolet seed laser. We report the lasing of the EEHG free-electron laser (FEL) at an extreme ultraviolet (EUV) wavelength with a seeded FEL facility, the Shanghai soft x-ray FEL. For the first time, we have benchmarked the basic theory of EEHG by measuring the bunching factor distributions over one octave down to the EUV region. Our results demonstrated the key advantages of the EEHG FEL, i.e., generation of very high harmonics with a small laser-induced energy spread and insensitivity to beam imperfections, and marks a great step towards fully coherent x rays with the EEHG scheme.

Extreme ultraviolet

Extreme Ultraviolet Lithography

Free-electron laser

Harmonic

Ultraviolet

10.1103/physrevaccelbeams.22.050703

Cite

Citations (44)

Spatiotemporal characteristics of discontinuous soil failures on debris flow source slopes

Engineering Geology (2021)

Xiaojun Guo Yong Li Peng Cui Yan Yan Baoliang Wang

Debris flow

Intermittency

Slope failure

Catastrophic failure

Intensity

10.1016/j.enggeo.2021.106438

Cite

Citations (10)

A unified expression for grain size distribution of soils

Geoderma (2016)

Yong Li Chengmin Huang Baoliang Wang Tian Xiafei Jingjing Liu

Expression (computer science)

10.1016/j.geoderma.2016.11.011

Cite

Citations (41)

Variation in grain size distribution in debris flow

Journal of Mountain Science (2015)

Yong Li Baoliang Wang Xiaojun Zhou Wan-chun Gou

Debris flow

10.1007/s11629-014-3351-3

Cite

Citations (19)

Velocity of Debris Flow Determined by Grain Composition

Journal of Hydraulic Engineering (2020)

Daochuan Liu Yong Li Yong You Jinfeng Liu Baoliang Wang

Velocity is one of the most important parameters of debris flows, and it is usually calculated using Manning formula in hydraulics, mostly ignoring the granular effects due to flow materials. This study proposes a method in term of grain composition of debris flow, incorporating the physical effects of grain on roughness. It is found that the Manning resistance coefficient can be well related to the grain size distribution (GSD) and thus the method is expected to have a wide application. A new formula incorporating the influence of granular effects is built based on observation data of debris flows in Jiangjia Gully (JJG), China, and then it is tested by data from debris flows in other regions.

Debris flow

Hydraulic roughness

Hydraulics

10.1061/(asce)hy.1943-7900.0001761

Cite

Citations (6)