检索结果-南通市图书馆

high harmonic generation and application for photoemission spectroscopy in condensed matter

在线全文

学校读者我要写书评

暂无评论

Materials Futures 2022年第3期1卷 53-67页

作者： Shiyang Zhong Yueying Liang Shuai Wang Hao Teng Xinkui He Zhiyi Wei Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190People’s Republic of China Songshan Lake Materials Laboratory Dongguan 523808People’s Republic of China University of Chinese Academy of Science Beijing 10049People’s Republic of China

high harmonic generation(HHG)delivering attosecond pulse duration with photon energy in the extreme ultraviolet spectral range has been demonstrated as a robust table-top coherent light source,allowing for the observation and manipulation of ultrafast process within the shortest time window ever made by *** past decade has witnessed the rapid progress of HHG from a variety of solid targets and its application for photoemission spectroscopy in condensed *** this article,we review the HHG in solids and the understanding of the underlying physics of HHG,which allows all-optical band structure *** also introduce combinations of HHG source and photoemission spectroscopy,such as angular-resolved photoemission spectroscopy and photoemission electron *** the capacity of exploring a wide momentum space and high temporal resolution,the extension of attosecond science to the field of condensed matter physics will lead to new insights into the fundamental ultrafast dynamics in novel quantum materials.

关键词： high harmonic generation attosecond angle-resolved photoemission spectroscopy ultrafast dynamics photoemission electron microscopy

Frequency dependence of quantum path interference in non-collinear high-order harmonic generation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2016年第2期25卷 129-134页

作者：钟诗阳贺新奎滕浩叶蓬汪礼锋何鹏魏志义 Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences

high-order harmonic generation（HHG） driven by two non-collinear beams including a fundamental and its weak second harmonic is numerically studied. The interference of harmonics from adjacent electron quantum paths is found to be dependent on the relative delay of the driving pulse, and the dependences are different for different harmonic *** frequency dependence of the interference is attributed to the spatial frequency chirp in the HHG beam resulting from the harmonic dipole phase, which in turn provides a potential way to gain an insight into the generation of high-order harmonics. As an example, the intensity dependent dipole phase coefficient α is retrieved from the interference fringe.

关键词： high harmonic generation non-collinear dipole phase ultrafast optics

A tunable XUV monochromatic light source based on the time preserving grating selection of high-order harmonic generation

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2017年第7期26卷 194-198页

作者：牛永梁红静刘燚刘方圆马日丁大军 Institute of Atomic and Molecular Physics Jilin University Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy Jilin University

We accomplish a laboratory facility for producing a femtosecond XUV coherent monochromatic radiation with a broad tunable spectral range of 20 eV-75 eV. It is based on spectral selected single-order harmonics from intense laser driven high harmonic generation in gas phase. The time preserving for the selected harmonic radiation is achieved by a Czerny-Turner type monochromator designed with a conical diffraction grating mount for minimizing the time broadening caused by grating diffraction and keeping a relatively high diffraction efficiency. Our measurement shows that the photon flux of the 23-order harmonic（H23） centered at 35.7 eV is 1×10~9 photons/s approximately with a resolving power E/？E ≈ *** source provides an ultrashort tunable monochromatic XUV beam for ultrafast studies of electronic and structural dynamics in a large variety of matters.

关键词： high harmonic generation conical diffraction time preserving monochromator femtosecond extreme ultraviolet pulse

Influence of laser contrast on high-order harmonic generation from solid-density plasma surfaces

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2017年第8期15卷 86-89页

作者：高健刘峰葛绪雷邓彦卿张国博方远魏文青杨骕远晓辉陈民盛政明张杰 Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Collaborative Innovation Center of IFSA (CICIFSA) Shanghai Jiao Tong University Shanghai 200240 China State Key Laboratory of Surface Physics and Department of Physics Fudan University Shanghai 200433 China College of Science National University of Defense Technology Changsha 410073 China SUPA Department of Physics University of Strathclyde Glasgow G40NG UK

high-order harmonic generation （HOHG） from the inter- actions of relativistically intense laser pulses with solid-density plasma surfaces has been demonstrated as a promising bright coherent x-ray source in the last... 详细信息

关键词： Electric fields Fused silica high harmonic generation Laser beams Laser plasmas Phase matching

Attosecond spectroscopy for filming the ultrafast movies of atoms,molecules and solids

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2022年第12期31卷 191-211页

作者： Lixin He Xiaosong Zhu Wei Cao Pengfei Lan Peixiang Lu Wuhan National Laboratory for Optoelectronics and School of Physics Huazhong University of Science and TechnologyWuhan 430074China Optical Valley Laboratory Hubei 430074China

Three decades ago,a highly nonlinear nonpertubative phenomenon,now well-known as the high harmonic generation(HHG),was discovered when intense laser irradiates gaseous *** the HHG produces broadband coherent radiation,it becomes the most promising source to obtain attosecond *** door to the attosecond science was opened ever *** this review,we will revisit the incredible adventure to the ***,the progress of attosecond pulse generation is ***,we introduce the efforts on imaging the structures or filming the ultrafast dynamics of nuclei and electrons with unprecedented attosecond temporal and Angstrom spatial resolutions,utilizing the obtained attosecond pulses as well as the high harmonic spectrum itself.

关键词： strong-field physics attosecond science high harmonic generation ultrafast spectroscopy

Time-energy properties of an attosecond extreme ultra-violet pulse

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2010年第10期19卷 217-224页

作者：葛愉成何海萍 School of Physics and Key Laboratory of Nuclear Physics and Technology Peking University

The time-energy properties of high-order harmonic generation （HHG） are calculated for a linearly polarized 7- fs laser pulse with different carrier-envelope phases （CEPs）. The quantum trajectory paths that contribute to an as （1 as=10^-18 s） pulse in HHG are identified. The laser-duration dependence and the CEP dependence of HHG energy property are investigated. The study shows that an as extreme ultra-violet （XUV） pulse can be selected from HHG spectrum near cut-off energy with a bandpass optical filter. The theoretical prediction of the pulse duration is proportional to bandwidth. Analysis suggests that a measured narrowband as XUV pulse may consist of instantaneous shorter pulses each dependent on laser pulse duration, intensity, and CEP. These information can be used as references for producing, selecting, improving and manipulating （timing） as pulses.

关键词： high harmonic generation energy properties attosecond pulse carrier envelope phase

generation of elliptical isolated attosecond pulse from oriented H_(2)^(+)in a linearly polarized laser field

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2022年第4期31卷 281-286页

作者： Yun-He Xing Jun Zhang Xiao-Xin Huo Qing-Yun Xu Xue-Shen Liu Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China

We investigate the ellipticity of the high-order harmonic generation from the oriented H_(2)^(+)exposed to a linearly polarized laser field by numerically solving the two-dimensional time-dependent Schrodinger equation(2 D TDSE).Numerical simulations show that the harmonic ellipticity is remarkably sensitive to the alignment *** harmonic spectrum is highly elliptically polarized at a specific alignment angleθ=30°,which is insensitive to the variation of the laser *** position of the harmonic intensity minima indicates the high ellipticity,which can be attributed to the two-center interference *** high ellipticity can be explained by the phase difference of the *** result facilitates the synthesis of a highly elliptical isolated attosecond pulse with duration down to 65 as,which can be served as a powerful tool to explore the ultrafast dynamics of molecules and study chiral light-matter interaction.

关键词： high harmonic generation linearly polarized laser fields elliptical isolated attosecond pulse alignment angle two-center interference effect

Table-top optical parametric chirped pulse amplifiers: past and present

在线全文

学校读者我要写书评

暂无评论

Opto-Electronic Advances 2023年第3期6卷 57-83页

作者： Audrius Dubietis Aidas Matijošius Laser Research Center Vilnius UniversitySaulėtekio Avenue 10LT-10223 VilniusLithuania

The generation of power-and wavelength-scalable few optical cycle pulses remains one of the major challenges in modern laser *** the past decade,the development of table-top optical parametric chirped pulse amplificationbased systems was progressing at amazing speed,demonstrating excellent performance characteristics in terms of pulse duration,energy,peak power and repetition rate,which place them at the front line of modern ultrafast laser *** present,table-top optical parametric chirped pulse amplifiers comprise a unique class of ultrafast light sources,which currently amplify octave-spanning spectra and produce carrier-envelope phase-stable,few optical cycle pulses with multi-gigawatt to multi-terawatt peak powers and multi-watt average powers,with carrier wavelengths spanning a considerable range of the optical *** article gives an overview on the state of the art of table-top optical parametric chirped pulse amplifiers,addressing their relevant scientific and technological aspects,and provides a short outlook of practical applications in the growing field of ultrafast science.

关键词： optical parametric amplification post-compression ultrafast nonlinear optics high harmonic generation

All optical method for measuring the carrier envelope phase from half-cycle cutoffs

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2014年第7期23卷 439-443页

作者：李钱光陈欢张秀易煦农 School of Physics and Electronic-information Engineering Hubei Engineering University Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables Hubei Engineering University

An all optical method is demonstrated for measuring the carrier-envelope phase （CEP） of few-cycle laser pulses. It is found that, in the few-cycle regime, the high harmonic spectrum generated from asymmetric molecules shows several half-cycle cutoffs that change their positions as the CEP varies. Such half-cycle cutoffs represent the fingerprint of different quantum trajectories and the waveform of the driving pulse. In this case, the CEP can be accurately measured from the half-cycle cutoffs.

关键词： high harmonic generation carrier-envelope phase measurement