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| 1 | lonization and dissociation of acetonitrile by intense femtosecond laser pulse显示文摘Photoionization and photodissociation of CH3CN were studied by a linear time of flight mass spectrometer coupled with 800 nm, 50 fs laser pulses at intensities of 6.3×1013-1.2×1014 W/cm2. The laser power dependences for principal ions CH3CN+, CH2CN+, CHCN+ and CCN+ were measured, which are consistent with the numbers of photons required to produce the ions via multiphoton ionization and dissociation. The results show that eight-photon non-resonant multiphoton ionization is the main photoionization mechanism of the parent ion CH3CN+, while the fragment ions were produced through the dissociation of the molecules in the super-excited states. | WU Chengyin, XIONG Yijia, GAO Zhen, KONG Fan’ao, LU Haihe, YANG Xiaodong & XU ZhizhanInstitute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China Correspondence should be addressed to Kong Fan’ao | 2000 | Chinese Science Bulletin2000，45，21： | 3 |
| 2 | Application of a Self-developed Proton Transfer Reaction-Mass Spectrometer to On-line Monitoring Trace Volatile Organic Compounds in Ambient Air显示文摘 | KANG Meng ZOU Xue LU Yan WANG Hongmei SHEN Chengyin JIANG Haihe CHU Yannan | 2016 | Chemical Research in Chinese Universities2016，32，4： | 2 |
| 3 | Active-passive mode-locking using Cr4+∶YAG crystal as saturable absorber显示文摘 | Leng Yuxin Lu haihe Lin Lihuang | 2001 | Optics & Laser Technology2001，33，： | 1 |
| 4 | Spectroscopic analysis of high electric field enhanced ionization in laser filaments in air for corona guiding显示文摘We report on a systematic experimental study on the fluorescence spectra produced from a femtosecond laser filament in air under a high electric field. The electric field alone was strong enough to create corona discharge(CD). Fluorescence spectra from neutral and ionic air molecules were measured and compared with pure high-voltage CD and pure laser filamentation(FIL). Among them, high electric field assisted laser FIL produced nitrogen fluorescence more efficiently than either pure CD or pure FIL processes. The nonlinear enhancement of fluorescence from the interaction of the laser filament and corona discharging electric field resulted in a more efficient ionization along the laser filament zone, which was confirmed by the spectroscopic measurement of both ionization-induced fluorescence and plasma-scattered 800 nm laser pulses. This is believed to be the key precursor process for filament-guided discharge. | Yingxia Wei Yaoxiang Liu Tie-Jun Wang Na Chen Jingjing Ju Yonghong Liu Haiyi Sun Cheng Wang Jiansheng Liu Haihe Lu See Leang Chin Ruxin Li | 2016 | High Power Laser Science and Engineering2016，4，1： | 1 |
| 5 | Molecular mechanisms of autophagy and implications in liver diseases显示文摘Autophagy is a highly conserved process in which cytosolic contents are degraded by the lysosome,which plays an important role in energy and nutrient balance,and protein or organelle quality control.The liver is the most important organ for metabolism.Studies to date have revealed a significant role of autophagy in the maintenance of liver homeostasis under basal and stressed conditions,and the impairment of autophagy has been closely linked to various liver diseases.Therefore,a comprehensive understanding of the roles of autophagy in liver diseases may help in the development of therapeutic strategies via targeting autophagy.In this review,we will summarize the latest understanding of the molecular mechanisms of autophagy and systematically discuss its implications in various liver diseases,including alcohol-related liver disease,non-alcoholic fatty liver disease,viral hepatitis,hepatocellular carcinoma,and acetaminophen-induced liver injury. | Yuankai Wu Hayden Weng Siong Tan Jin-Yi Lin Han-Ming Shen Haihe Wang Guang Lu | 2023 | Liver Research2023，7，1： | 1 |
| 6 | Phase-matched high-order harmonics by interaction of Ar atoms with high-repetition-rate low-energy femtosecond laser pulses显示文摘Phase-matched high-order harmonic generation in Ar gas-filled cell was investigated experimentally. We obtained phase-matched 27th order harmonic driven by a commercially available solid-state femtosecond laser system at 0.55 mJ/pulse energy level and 1 kHz repetition rate. To our knowledge, this is the lowest driving laser energy used to obtain phase-matched 27th order harmonic in a static gas cell. High-order harmonic generation at different gas density was studied systematically. Spectral blueshift and broadening of high harmonics under different pressure were analyzed. We found that the source size and spatial distribution of high-order harmonics are quite different under the phase-matching condition from those of the phase-mismatching case. | XIE Xinhua ZENG Zhinan LI Ruxin CHEN Shu LU Haihe YIN Dingjun XU Zhizhan | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，4： | 0 |
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