ABOVE-THRESHOLD

作品数：9被引量：4H指数：2
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Numerical simulations of strong-field processes in momentum space
《Chinese Physics B》2020年第2期87-90,共4页Yan Xu Xue-Bin Bian 
Project supported by the National Key Research and Development Program of China(Grant No.2019YFA0307702);the National Natural Science Foundation of China(Grants Nos.91850121 and 11674363);the Science Fund of Educational Department of Henan Province of China(Grant No.2011C140001);the Ninth Group of Key Disciplines in Henan Province,China(Grant No.2018119).
The time-dependent Schrodinger equation(TDSE) is usually treated in the real space in the textbook.However,it makes the numerical simulations of strong-field processes difficult due to the wide dispersion and fast osc...
关键词：HIGH-ORDER HARMONIC generation ABOVE-THRESHOLD IONIZATION NUMERICAL method 
Comparative study on atomic ionization in bicircular laser fields by length and velocity gauges S-matrix theory
《Chinese Physics B》2020年第2期254-261,共8页Hong Xia Xin-Yan Jia Xiao-Lei Hao Li Guo Dai-He Fan Gen-Bai Chu Jing Chen 
Project supported by the Key Laboratory Project of Computational Physics of National Defense Science and Technology of China(Grant No.6142A05180401);the National Key Program for S&T Research and Development of China(Grant Nos.2019YFA0307700 and 2016YFA0401100);the National Natural Science Foundation of China(Grant Nos.11847307,11425414,11504215,11774361,and 11874246).
Ionization of atoms in counter-rotating and co-rotating bicircular laser fields is studied using the S-matrix theory in both length and velocity gauges.We show that for both the bicircular fields,ionization rates are ...
关键词：ABOVE-THRESHOLD ionization(ATI) bicircular laser fields LENGTH GAUGE VELOCITY GAUGE S-MATRIX theory 
Asymmetric structure of atomic above-threshold ionization spectrum in two-color elliptically polarized laser fields
《Chinese Physics B》2019年第10期183-191,共9页Xu-Cong Zhou Shang Shi Fei Li Yu-Jun Yang Jing Chen Qing-Tian Meng Bing-Bing Wang 
Project supported by the National Natural Science Foundation of China(Grant Nos.11474348,11674198,11425414,and 11774411)
According to the frequency-domain theory, we investigate the asymmetric structure of above-threshold ionization(ATI) spectrum of an atom in two-color elliptically polarized(EP) laser fields. When both laser fields are...
关键词：ABOVE-THRESHOLD IONIZATION elliptically POLARIZED two color laser FIELDS ASYMMETRIC structure 
Angle-resolved spectra of the direct above-threshold ionization of diatomic molecule in IR + XUV laser fields
《Chinese Physics B》2019年第2期185-191,共7页Shang Shi Fa-Cheng Jin Bing-Bing Wang 
Project supported by the National Natural Science Foundation of China(Grant Nos.11334009,11425414,11474348,and 11774411)
The direct above-threshold ionization(ATI) of diatomic molecules in linearly-polarized infrared and extreme ultraviolet(IR+XUV) laser fields is investigated by the frequency–domain theory based on the nonperturbative...
关键词：ABOVE-THRESHOLD IONIZATION IR+XUV laser FIELDS molecular structure 
Nonperturbative generation of above-threshold harmonics from pre-excited argon atoms in intense mid-infrared laser fields
《High Power Laser Science and Engineering》2017年第4期20-25,共6页Guihua Li Hongqiang Xie Ziting Li Jinping Yao Wei Chu Ya Cheng 
supported by the National Basic Research Program of China (No. 2014CB921300);the National Natural Science Foundation of China (Nos. 11127901, 11134010, 61575211, 11304330, 11404357, 61405220, 61605227, and 61705034);the Shanghai ‘Yang Fan’ Program (Nos. 14YF1406100 and 16YF1412700)
We experimentally investigate the generation of above-threshold harmonics completely from argon atoms on an excited state using mid-infrared femtosecond laser pulses. The highly nonlinear dependences of the observed s...
关键词：above-threshold harmonics excited state mid-infrared femtosecond laser 
Role of XUV Photons in Atomic High-Order Above-Threshold Ionization Processes in IR+XUV Two-Color Laser Fields
《Chinese Physics Letters》2017年第11期15-19,共5页张奎 刘敏 王兵兵 郭迎春 严宗朝 陈京 柳晓军 
Supported by the National Natural Science Foundation of China under Grant Nos 11474348,61275128,11274050,11334009and 11425414;the NSERC of Canada;the Canadian Computing Facilities of SHARCnet and ACEnet;the National Basic Research Program of China under Grant No 2013CB922200
We investigate the above-threshold ionization of an atom in a combined infrared （IR） and extreme ultraviolet （XUV） two-color laser field and focus on the role of XUV field in the high-order above-threshold ionizat...
关键词：ATI Role of XUV Photons in Atomic High-Order Above-Threshold Ionization Processes in IR+XUV Two-Color Laser Fields IR 
Even-odd harmonics generated from above-threshold ionization
《Frontiers of physics》2014年第1期69-73,共5页Dong-Sheng Guo Jing-Tao Zhang Zhen-Rong Sun Jin T. Wang Ju Gao Zhi-Wei Sun R. R. Freeman 
Acknowledgements This work was supported in part by the National Natural Science Foundation of China （Grant Nos. 11174304 and 61078080）, the National Basic Research Program of China （973 Program） （Grant Nos. 2010CB923203 and 2011CB808103）, and also the National Natural Science Foundation of China under Grant No. 11172302.
We are reporting a theoretical prediction： The photoelectrons forming above-threshold-ionization （ATI） peaks emit both even and odd harmonics. These harmonics exhibit plateau and cut-off features similar to those o...
关键词：strong-field laser physics above-threshold inoization high harmonic generation evenodd harmonics nonperturbative quantum electrodynamics 
Analytical drain current model for amorphous IGZO thin-film transistors in above-threshold regime被引量：2
《Journal of Semiconductors》2011年第7期34-37,共4页何红宇 郑学仁 
Project supported by the Cadence Design System,Inc.
An analytical drain current model is presented for amorphous In-Ga-Zn-oxide thin-film transistors in the above-threshold regime,assuming an exponential trap states density within the bandgap.Using a charge sheet appro...
关键词：amorphous In-Ga-Zn-oxide（a-IGZO） thin-film transistors（TFTs） surface potential threshold voltage trap states 
Above-threshold detachment of negative ions by circularly polarized few-cycle laser fields被引量：2
《Chinese Optics Letters》2011年第1期5-8,共4页白丽华 刘宇恒 崔婷婷 王燕 邓冬梅 张惠芳 
supported by the National Natural Science Foundation of China under Grant Nos.60908006,10804067,and 60407007
In accordance with nonperturbative quantum scattering theory, we investigate photoelectron angular distri- butions （PADs） from above-threshold detachment （ATD） of negative ions irradiated by circularly polarized f...
关键词：Angular distribution ANISOTROPY ELECTRONS High energy physics Negative ions PHOTONS 
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