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Generation of two-color polarization-adjustable radiation pulses for storage ring light source 预览
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作者 Wei-Hang Liu Yi Wu +2 位作者 Yi Jiao Zheng-He Bai Sheng Wang 《核技术:英文版》 SCIE CAS CSCD 2019年第4期123-131,共9页
To date, two-color pulses are widely used in pump–probe experiments. For a ring-based light source, the power of the spontaneous radiation fluctuates randomly in the longitudinal direction. It is difficult to produce... To date, two-color pulses are widely used in pump–probe experiments. For a ring-based light source, the power of the spontaneous radiation fluctuates randomly in the longitudinal direction. It is difficult to produce twocolor double pulses by optical methods. In this paper, we introduce a method based on the echo-enabled harmonic generation scheme that generates two-color pulses in a storage ring light source. By adopting crossed undulators and a phase shifter, the polarization of the two-color pulses can be easily switched. A numerical simulation based on a diffraction-limited storage ring, the Hefei Advanced Light Source, suggests that the time delay and spectral separation of the two pulses can be adjusted linearly by changing the pulse duration and chirp parameters of the seed laser. A circular polarization degree above 80% could be achieved. 展开更多
关键词 Two-color PULSES Echo-enabled harmonic GENERATION Diffraction-limited storage ring CROSSED UNDULATORS Circular polarization
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Generating femtosecond coherent X-ray pulses in a diffractionlimited storage ring with the echo-enabled harmonic generation scheme 预览
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作者 Wei-Hang Liu Guan-Qun Zhou Yi Jiao 《核技术:英文版》 SCIE CAS CSCD 2018年第10期191-199,共9页
To study ultrafast processes at the sub-picosecond level,novel methods based on coherent harmonic generation technologies have been proposed to generate ultrashort radiation pulses in existing ring-based light sources... To study ultrafast processes at the sub-picosecond level,novel methods based on coherent harmonic generation technologies have been proposed to generate ultrashort radiation pulses in existing ring-based light sources.Using the High Energy Photon Source as an example,we numerically test the feasibility of implementing one coherent harmonic generation technology,i.e.,the echo-enabled harmonic generation(EEHG)scheme,in a diffraction-limited storage ring(DLSR).Two different EEHG element layouts are considered,and the effect of the EEHG process on the electron beam quality is also analyzed.Studies suggest that soft X-ray pulses,with pulse lengths of a few femtoseconds and peak powers of up to 1 MW,can be generated by using the EEHG scheme,while causing little perturbation to the regular operation of a DLSR. 展开更多
关键词 Echo-enabled harmonic generation Diffraction-limited storage ring HIGH-ENERGY PHOTON source FEMTOSECOND X-ray PULSES
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Hard X-ray free-electron laser based on echo-enabled staged harmonic generation scheme
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作者 FENG Chao ZHAO ZhenTang 《中国科学通报:英文版》 SCIE CAS 2010年第3期221-227,共7页
基于使回响能的上演泛音产生(EESHG ) 生产协调难 X 光检查的一条新奇途径免费电子的激光计划被建议。这个计划不是简单串联使回响能的泛音代(EEHG ) ,但是由象配置一样的 EEHG 和常规高获得的泛音代(HGHG ) 组成,它也在 EEHG 原则工... 基于使回响能的上演泛音产生(EESHG ) 生产协调难 X 光检查的一条新奇途径免费电子的激光计划被建议。这个计划不是简单串联使回响能的泛音代(EEHG ) ,但是由象配置一样的 EEHG 和常规高获得的泛音代(HGHG ) 组成,它也在 EEHG 原则工作。充分协调的难 X 光检查放射能与减少的尺寸从常规 VUV 种子激光直接被获得,与自我放大的自发的排放(SASE ) 比较的费用基于难 X 光检查设备,这被显示出。 展开更多
关键词 硬X射线辐射 自由电子激光 谐波产生 激光回波 放大的自发辐射 种子激光 真空紫外 高增益
Development of X-ray Free-Electron Lasers(Invited Paper)
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作者 赵振堂 王东 《中国激光》 EI CAS CSCD 北大核心 2010年第9期2242-2252,共11页
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