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A Wide Spaced Femtosecond Ti:Sapphire Frequency Comb at 15 GHz by a Fabry–Pérot Filter Cavity

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Chinese Physics Letters 2013年第10期30卷 97-100页

作者： HOU Lei HAN Hai-Nian ZHANG Jin-wei LI De-Hua wei zhi-yi Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190

We realize a wide spaced frequency comb by using an external low-fineness Fabry–Pérot(F-P)cavity to filter few-cycle laser pulses from a Kerr-lens mode-locked Ti:sapphire laser at the fundamental repetition rate of 350 *** spacing as wide as 15 GHz with spectrum covered from 690 nm to 710 nm is demonstrated,corresponding to a filter multiple of about *** scanning transmission peaks after the F-P cavity with cavity lengths are also simulated numerically,and the results are in agreement with the experiment.

关键词： Femto Fabry filter

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Structure and Biological Activities of Novel Triazole Compounds Containing 1,3,4-Oxadiazole Ring

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Chemical Research in Chinese Universities 2008年第3期24卷 299-302页

作者： XU Liang-zhong BI Wen-zhao SHANG Yu-qing ZHAI zhi-wei yi Xu College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P R. China

Eighteen novel triazole compounds containing 1,3,4-oxadiazole groups were synthesized from 2-（1H-1,2,4-triazol-1-yl）acetohydrazide and carbon disulfide by several step reactions. The target compounds were characterized by elemental analysis, 1H NMR, 13C NMR, IR, MS, and X-ray crystallography. The results of preliminary biological tests show that all the compounds exhibit certain fungicidal activities.

关键词： 1H-1,2,4-Triazole 1,3,4-Oxadiazole Biological activity Crystal structure

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Diagnostics of Femtosecond Laser-Plasmas Using Fundamental and Second Harmonic Emission

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Chinese Physics Letters 2000年第11期17卷 818-820页

作者： ZHAO Li-Zeng ZHANG Ping FENG Bao-Hua wei zhi-yi ZHANG Jie Laboratory of Optical Physics Institute of PhysicsChinese Academy of SciencesBeijing 100080 Institute of High Energy Physics Chinese Academy of SciencesBeijing 100039

By observing the fundamental and second harmonic emission from a plasma produced by a 150fs,5mJ laser at 800nm,the electron temperature,the expansion speed and the scalelength of the plasma have been *** the polarization of the fundamental and second harmonic emission has been *** could be a useful diagnostic for modulation at the critical surface of the plasma.

关键词： polarization Femto second

A Tunable Ultrafast Source by Sum-Frequency Generation between Two Actively Synchronized Ultrafast Lasers

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Chinese Physics Letters 2012年第6期29卷 152-154页

作者： XUAN Hong-Wen WANG Nan ZHANG Yong-Dong WANG Zhao-Hua wei zhi-yi Beijing National Laboratory for Condensed Matters and Institute of Physics Chinese Academy of SciencesBeijing 100190

We demonstrate an experimental setup of a tunable ultrafast laser source ty sum-frequency generation (SFG)between a mode-locking Ti:sapphire laser and a Nd:YVO4 *** generated wavelength by SFG is tunable from 450nm to 480nm with timing jitter no more than 1 *** average output power is over 20mW and the maximum is about 30mW at *** ultrafast laser is a simple and easy tuning source applied to some pump-probe spectroscopy and ultrafast dynamics experiments.

关键词： tunable tuning pump

Complex Spectra Structure of an Attosecond Pulse Train Driven by Sub-5-fs Laser Pulses

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Chinese Physics Letters 2011年第7期28卷 137-139页

作者： YUN Chen-Xia TENG Hao ZHANG wei WANG Li-Feng ZHAN Min-Jie HE Xin-Kui WANG Bing-Bing wei zhi-yi Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190

We present the observation of the additional spectral components between the odd order harmonics in the harmonic spectrum generated from argon gas driven by sub-5-fs laser *** theoretical analysis shows that the asymmetric laser field in both spatial and temporal domains leads to this complicated spectrum structure of high order harmonics.

关键词： laser harmonics spectrum

A 100-TW Ti:Sapphire Laser System at a Repetition Rate of 0.1 Hz

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Chinese Physics Letters 2012年第1期29卷 141-143页

作者： TENG Hao MA Jing-Long WANG Zhao-Hua ZHENG yi GE Xu-Lei ZHANG wei wei zhi-yi LI Yu-Tong ZHANG Jie Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190 Department of Physics Shanghai Jiao Tong UniversityShanghai 200240

We demonstrate a 100-TW-class femtosecond Ti:sapphire laser running at a repetition rate of 0.1Hz based on a 20TW/10 Hz laser facility (XL-Ⅱ).Pumping the new stage amplifier with a 25J green Nd:glass laser,we success... 详细信息

关键词： Ti:sapphire amplifier laser

Generation and Measurement of Isolated 160-Attosecond XUV Laser Pulses at 82eV

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Chinese Physics Letters 2013年第9期30卷 54-57页

作者： ZHAN Min-Jie YE Peng TENG Hao HE Xin-Kui ZHANG wei ZHONG Shi-Yang WANG Li-Feng YUN Chen-Xia wei zhi-yi Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190

Isolated attosecond extreme-ultraviolate(XUV)pulses are generated based on high-harmonic-generation from a neon gas cell driven by carrier-envelope phase stabilized sub-5-fs Ti:sapphire laser pulses at repetition rate of *** characterization of isolated attosecond XUV pulses is demonstrated to be 160-attosecond by attosecond streaking *** development of attosecond source and streaking spectroscopy will allow scientists to explore the electron dynamics in matter.

关键词： spectroscopy second extreme

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Effects of Polarization on Super-hot Electron Generation in Femtosecond Laser-Plasma Interaction

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Chinese Physics Letters 2001年第10期18卷 1374-1376页

作者： ZHANG Ping LIANG Tian-Jiao CHEN Li-Ming LI Yu-Tong CHEN Duan-Bao LI Zu-Hao HE Jing-Tang wei zhi-yi WANG Long TANG Xiao-wei ZHANG Jie Institute of High Energy Physics Chinese Academy of SciencesBeijing 100039 Laboratory of Optical Physics:Institute of Physics Chinese Academy of SciencesBeijing 100080 Institute of Physics Chinese Academy of SciencesBeijing 100080

The effects of laser polarization on super-hot electron (> 100 keV) generation have been studied in the interaction of femtosecond laser light (800 nm, 150 fs, 6 × 10^(15) W·cm^(-2)) with a pre-formed plasma from a slab Cu target. For p-polarized laser pulses, high-energy γ-rays of the energy ~400keV were detected. The electron temperatures deduced from the γ-ray spectra were 66 and 52keV, respectively, in normal and reflective directions of the solid target, and hot electrons were emitted out of the plasma mainly in the normal direction. In contrast, there were nearly no γ-rays >100keV found for s-polarized laser pulses. The hot electron temperature was 26keV and the emission of hot electrons was parallel to the laser field. The superposition of resonant field with electrostatic field excited by escaping electrons may contribute to the high-energy γ-ray or super-hot electron (> 100 keV) generation.

关键词： field. polarized Polarization

Record-breaking bifunctional oxygen electrocatalyst accomplished by a data-driven approach for zinc-air batteries

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Journal of Energy Chemistry 2025年第1期100卷 144-145页

作者： Deviprasath Chinnadurai zhi wei Seh Institute of Materials Research and Engineering (IMRE) Agency for Science Technology and Research (A*STAR)

Rechargeable zinc-air batteries(ZABs) have recently drawn great attention in energy research due to their high theoretical capacity,low costs, and inherently safe nature [1–3]. However, the sluggish cathode reactions necessitate the development of bifunctional oxygen electrocatalysts with lower ΔE indicator values. The ΔE indicator is commonly employed to quantitatively evaluate the electrocatalytic activity of a bifunctional oxygen electrocatalyst,representing the overall overpotential from oxygen reduction reaction(ORR) to oxygen evolution reaction(OER).

关键词： Data-driven approach Bifunctional oxygen electrocatalyst Record breaking performance Zinc-air batteries