DENG Yimin; ZHANG Yu; LU Peixiang; CAO Wei

doi:10.7498/aps.74.20250550

Abstract
Transient absorption spectroscopy using soft X-ray coherent light sources as ultrafast probes holds significant promise for applications in chemistry, biology, and materials science. This article presents the design of a transient absorption apparatus based on tabletop soft X-ray light sources. A commercial femtosecond laser system (4.4mJ, 25fs, 800nm, 1kHz) drives an optical parametric amplifier, generating a 900μJ, 28fs, 1440nm short-wavelength infrared (SWIR) pulse. This SWIR pulse is spectrally broadened and temporally compressed into a few-cycle pulse (400μJ, 16.5fs, 1530nm) via a hollow-core fiber compressor. The few-cycle SWIR pulse then drives the generation of attosecond soft X-ray high-harmonic radiation, with the maximum photon energy extending into the water window region (>300eV). The spectral resolution of the soft X-ray spectrometer is determined to be 334meV at 243eV. The remaining 800nm pump pulse from the OPA system is combined with the high-harmonic soft X-ray probe using a hole mirror, forming a Mach-Zehnder interferometer with a time jitter of <10fs over one hour of data acquisition. This setup demonstrates the feasibility of performing time-resolved soft X-ray spectroscopy in a compact experimental configuration. Preliminary studies of transient absorption near the argon L-edge and carbon K-edge were conducted, establishing this system as a powerful tool for element-specific, time-resolved, and transition-channel-resolved investigations of electron dynamics.

Keywords:
high order harmonics /

soft X-ray /

transient absorption /

water window
Cited By

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]

[1]	Zhang Chun-Yan. High-order harmonic platform extension and cluster expansion of H ion cluster. Acta Physica Sinica, doi: 10.7498/aps.72.20230534
[2]	Ma Yong-Jun, Li Rui-Xuan, Li Kui, Zhang Guang-Yin, Niu Jin, Ma Yun-Feng, Ke Chang-Jun, Bao Jie, Chen Ying-Shuang, Lü Chun, Li Jie, Fan Zhong-Wei, Zhang Xiao-Shi. Three-dimensional nano-coherent diffraction imaging technology based on high order harmonic X-ray sources. Acta Physica Sinica, doi: 10.7498/aps.71.20220976
[3]	Yao Hui-Dong, Cui Bo, Ma Si-Qi, Yu Chao, Lu Rui-Feng. Enhancing high harmonic generation in bilayer MoS₂ by interlayer atomic dislocation. Acta Physica Sinica, doi: 10.7498/aps.70.20210731
[4]	Xu Jia-Wei, Xu Chuan-Xi, Zhang Rui-Tian, Zhu Xiao-Long, Feng Wen-Tian, Zhao Dong-Mei, Liang Gui-Yun, Guo Da-Long, Gao Yong, Zhang Shao-Feng, Su Mao-Gen, Ma Xin-Wen. Experimental measurement of state-selective charge exchange and test of astrophysics soft X-ray emission model. Acta Physica Sinica, doi: 10.7498/aps.70.20201685
[5]	Fan Xin, Liang Hong-Jing, Shan Li-Yu, Yan Bo, Gao Qing-Hua, Ma Ri, Ding Da-Jun. Extreme ultraviolet polarization vortex beam based on high harmonic generation. Acta Physica Sinica, doi: 10.7498/aps.69.20190834
[6]	Cai Huai-Peng^1\2, Gao Jian^1\2, Li Bo-Yuan^1\2, Liu Feng^1\2, Chen Li-Ming^1\2\3, Yuan Xiao-Hui^1\2, Chen Min^1\2, Sheng Zheng-Ming^1\2\4\5, Zhang Jie^1\2\3. High order harmonics generation by relativistically circularly polarized laser-solid interaction. Acta Physica Sinica, doi: 10.7498/aps.67.20181574
[7]	Li Xia-Zhi, Zou De-Bin, Zhou Hong-Yu, Zhang Shi-Jie, Zhao Na, Yu De-Yao, Zhuo Hong-Bin. Effect of plasma grating roughness on high-order harmonic generation. Acta Physica Sinica, doi: 10.7498/aps.66.244209
[8]	Luo Xiang-Yi, Liu Hai-Feng, Ben Shuai, Liu Xue-Shen. Enhancement of high-order harmonic generation from H2+ in near plasmon-enhanced laser field. Acta Physica Sinica, doi: 10.7498/aps.65.123201
[9]	Guan Zhong, Li Wei, Wang Guo-Li, Zhou Xiao-Xin. Study of high-order harmonic generation in crystals exposed to laser fields. Acta Physica Sinica, doi: 10.7498/aps.65.063201
[10]	Yu Zu-Qing, He Feng. Multiple cutoffs in high harmonic generation via multi-XUV-photon absorption. Acta Physica Sinica, doi: 10.7498/aps.65.224206
[11]	Yu Chao, Sun Zhen-Rong, Guo Dong-Sheng. Guo-Åberg-Crasemann theory for high harmonic generation and its cutoff law. Acta Physica Sinica, doi: 10.7498/aps.64.124207
[12]	Chen Huo-Yao, Liu Zheng-Kun, Wang Qing-Bo, Yi Tao, Yang Guo-Hong, Hong Yi-Lin, Fu Shao-Jun. Effect of curve groove on the spectral resolution for soft X-ray holographic flat-field gratings. Acta Physica Sinica, doi: 10.7498/aps.63.234203
[13]	Chen Gao, Yang Yu-Jun, Guo Fu-Ming. Analysis on the cutoff frequency of high order harmonic generation in the crystal. Acta Physica Sinica, doi: 10.7498/aps.62.083202
[14]	Liu Zheng-Kun, Qiu Ke-Qiang, Chen Huo-Yao, Liu Ying, Xu Xiang-Dong, Fu Shao-Jun, Wang Chen, An Hong-Hai, Fang Zhi-Heng. Studies on soft X-ray shearing interferometry with double-frequency gratings. Acta Physica Sinica, doi: 10.7498/aps.62.070703
[15]	Li Hui-Shan, Li Peng-Cheng, Zhou Xiao-Xin. Role of potential function in high order harmonic generation of model hydrogen atoms in intense laser field. Acta Physica Sinica, doi: 10.7498/aps.58.7633
[16]	Ma Tian-Peng, Hu Li-Qun, Chen Kai-Yun. Study of central plasma structure using soft X-ray signals. Acta Physica Sinica, doi: 10.7498/aps.58.1110
[17]	Yan Fen, Cui Ming-Qi, Chen Kai, Sun Li-Juan, Xi Shi-Bo, Zhou Ke-Jin, Zheng Lei, Zhao Yi-Dong, Wang Zhan-Shan, Zhu Jing-Tao, Zhang Zhong, Zhao Jia. Soft X-ray magmeto-optical Faraday rotation measurements with the multilayer polarizer. Acta Physica Sinica, doi: 10.7498/aps.57.2860
[18]	Wang Chen, Wang Wei, Wu Jiang, Dong Jia-Qin, Sun Jin-Ren, Wang Rui-Rong, Fu Si-Zu, Gu Yuan, Wang Shi-Ji, Huang Guan-Long, Lin Zun-Qi, Zhang G uo-Ping, Zhang Tan-Xin, Zheng Wu-Di. Experimental studies of Ni-like Ta x-ray laser. Acta Physica Sinica, doi: 10.7498/aps.53.3752
[19]	Wang Da-Wei, Liu Ting-Ting, Yang Hong, Jiang Hong-Bin, Gong Qi-Huang. . Acta Physica Sinica, doi: 10.7498/aps.51.2034
[20]	YU SHENG, LI HONG-FU, XIE ZHONG-LIAN, LUO YONG. A NONLINEAR SIMULATION ON BEAM-WAVE INTERACTION FOR HIGH-HARMONIC COMPLEX CAVITY GYROTRON WITH RADUAL TRANSITION. Acta Physica Sinica, doi: 10.7498/aps.49.2455

Metrics

Abstract views: 189
PDF Downloads: 11
Cited By: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

Search

Article

留言板

Abstract

Cited By

Metrics

Authors

Referees

About Journal

About

Search

Article

留言板

Abstract

Cited By

Metrics

Publishing process

Authors

Referees

About Journal

About