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Generation of Femtosecond Laser Pulse at 1.43 GHz from an Optical Parametric Oscillator Based on LBO Crystal

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Chinese Physics Letters 2019年第12期36卷 43-46页

作者： Jia-Jun Song Xiang-Hao Meng Zhao-Hua Wang Xian-zhi Wang Wen-Long Tian Jiang-Feng Zhu Shao-Bo Fang Hao Teng zhi-yi wei Bejjing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049 Songshan Lake Materials Laboratory Dongguan 523808 School of Physics and Optoelectronic Engineering Xiandian UniversityXi'an 710071

A femtosecond LBO optical parametric oscillator(OPO)with widely adjustable repetition rate by fractionally decrement of the cavity length is *** repetition rate of 755 MHz to 1.43 GHz at an interval of 75.5 MHz is realized,which is 10 to 19 times that of the pump *** properties of output signal at 750 nm at different repetition rates are *** power of signal decreases with increasing the repetition *** maximum power of 194 mW at the repetition rate of 755 MHz and the minimum power of 22 mW at repetition rate of 1.43 GHz for the signal at 750 nm are obtained for the pump power of 3 W.

关键词： pump Femto repetition

Monolithic 0–f Scheme-Based Frequency Comb Directly Driven by a High-Power Ti:Sapphire Oscillator

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Chinese Physics Letters 2020年第5期37卷 47-50页

作者： Jian-Wang Jiang Shao-Bo Fang Zi-Yue Zhang Jiang-Feng Zhu Hai-Nian Han Guo-Qing Chang zhi-yi wei School of Physics and Optoelectronic Engineering Xidian UniversityXi'an 710071 Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049 Songshan Lake Material Laboratory Dongguan 523808

A monolithic O-f scheme-based femtosecond optical frequency comb directly driven by a high-power Ti:sapphire laser oscillator is *** spectrum covering from 650 nm to 950 nm is generated from the Ti:sapphire oscillator with a repetition rate of 170 *** average output power up to 630 mW is delivered under the pump power of 4.5 W.A 44-dB signal-to-noise ratio(SNR)of the carrier-envelope phase offset(CEO)beat note is achieved under the resolution of 100 kHz and is long-term stabilized to a reference source at 20 *** integrated phase noise(IPN)in the range from 1 Hz to 1 MHz is calculated to be 138 mrad,corresponding to the timing jitter of 63 as at the central wavelength of 790 nm.

关键词： pump oscillator noise

Attosecond pulse trains driven by IR pulses spectrally broadened via supercontinuum generation in solid thin plates

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Chinese Physics B 2020年第1期29卷 89-94页

作者： Yu-Jiao Jiang Yue-ying Liang yi-Tan Gao Kun Zhao Si-Yuan Xu Ji Wang Xin-Kui He Hao Teng Jiang-Feng Zhu Yun-Lin Chen zhi-yi wei School of Physics and Optoelectronic Engineering Xidian UniversityXi'an 710071China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Institute of Applied Micro-Nano Materials School of ScienceBeijing Jiaotong UniversityBeijing 100044China Songshan Lake Material Laboratory Dongguan 523808China

We utilized a set of fused silica thin plates to broaden the spectrum of 1kHz,30 fs Ti:sapphire amplified laser pulses to an *** the compression by chirped mirror pairs,the generated few-cycle pulses were focused onto an argon filled gas *** detected high order harmonics corresponding to a train of 209 as pulses,characterized by the reconstruction of attosecond beating by interference of two-photon transition(RABITT)*** with the conventional attosecond pulse trains,the broad harmonics in such pulse trains cover more energy range,so it is more efficient in studying some typical cases,such as resonances,with frequency resolved *** the solid thin plates can support high power supercontinuum generation,it is feasible to tailor the spectrum to have different central wavelength and spectral width,which will make the RABITT source work in different applications.

关键词： supercontinuum generation high order harmonic generation reconstruction of attosecond beating by interference of two-photon transition(RABITT) attosecond pulse trains

7.6-W diode-pumped femtosecond Yb:KGW laser

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Chinese Physics B 2019年第4期28卷 207-210页

作者： Yan-Fang Cao Xiang-Hao Meng Jun-Li Wang Zhao-Hua Wang Meng-Yao Cheng Jiang-Feng Zhu zhi-yi wei School of Physics and Optoelectronic Engineering Xidian University Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Songshan Lake Materials Laboratory

We have demonstrated a high power diode-pumped mode-locked femtosecond Yb:KGW laser with semiconductor saturable absorber mirror(SESAM). By using an output coupler with 10% transmittance, the laser delivered 160-fs pulses with average output power of 7.6 W at a repetition rate of 78 MHz, corresponding to pulse energy of 97 nJ and peak power of 606 kW.

关键词： femtosecond diode-pump SESAM mode-locking

High power diode-pumped passively mode-locked Nd:YVO_4 laser at repetition rate of 3.2 GHz

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Chinese Physics B 2019年第5期28卷 122-125页

作者： Meng-Yao Cheng Zhao-Hua Wang Yan-Fang Cao Xiang-Hao Meng Jiang-Feng Zhu Jun-Li Wang zhi-yi wei School of Physics and Optoelectronic Engineering Xidian University Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Songshan Lake Materials Laboratory

A compact high power diode-pumped passively mode-locked Nd:YVO_4 laser with high repetition rate is *** an Nd:YVO_4 crystal and a semiconductor saturable absorber mirror(SESAM) in the oscillator, the picosecond pulse output with an average power of 1.38 W, a repetition rate of 3.24 GHz, and a pulse duration of 11.4 ps is achieved. After one stage of amplification, the final output power reaches 11.34 W, corresponding to a total optical-to-optical efficiency of about 32%. The root mean square(RMS) value of power fluctuation is demonstrated to be less than 0.6% in 24 hours,showing a superior stability with the compact configuration.

关键词： all-solid-state laser high repetition rate Nd:YVO4 laser mode-locked laser

Effect　of　muscarinic　blocker　on　enhancing　action　of　fructus　aurantilii　immaturus　in　the　intestinal　myoelectric　activity　in　dogs

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World Journal of Gastroenterology 1997年第2期3卷 70-71页

作者： HUANG Zi He 1, YANG De zhi 2, wei yi Quan 2 and LUO yin Hui 1

AIM To investigate the effect of Fructus Aurantii Immaturus (FAI) on the small intestinal electric activity. METHODS Effect of FAI was observed by using the computerized electrophysiologic method with migrating myoelectric complex (MMC) as a criterion. 100% FAI concentrated solution was given to fasted, healthy and conscious dogs by gastrostogavage, and as soon as the effect on electric activity of small intestine appeared, atropine was injected intramuscularly. RESULTS The enhancing action of FAI could be inhibited significantly by atropine, an antagonist of cholinergic receptor. It is shown that both the number of spike burst per cluster and the number of spike per minute in the phase Ⅱ and Ⅲ and general cycle were decreased ( P <0 01) although the duration of phase Ⅱ and general cycle were prolonged. CONCLUSION The effect of FAI might be related to muscarinic receptor.

关键词： furctus aurantii immaturus small intestine atropine electrophysiology

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

正断层黏滑错动对地铁隧道结构影响的模型试验研究

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岩土力学 2019年第8期40卷 3037-3044,3053页

作者：孙飞张志强易志伟西南交通大学交通隧道工程教育部重点实验室

以乌鲁木齐市轨道交通1号线地铁区间隧道穿越九家湾断层为工程依托,开展地铁隧道分段式衬砌结构穿越倾角60°正断层的大型剪切错动模型试验,对断层错动模拟过程中的隧道结构变形、应变分布特征、围岩压力、开裂形态等关键力学特征进行... 详细信息

以乌鲁木齐市轨道交通1号线地铁区间隧道穿越九家湾断层为工程依托,开展地铁隧道分段式衬砌结构穿越倾角60°正断层的大型剪切错动模型试验,对断层错动模拟过程中的隧道结构变形、应变分布特征、围岩压力、开裂形态等关键力学特征进行监测分析,获得了正断层黏滑错动下的隧道结构响应规律。研究结果表明:(1)正断层黏滑错动影响下,断层面处的隧道拱脚处于压剪状态,断层面附近的上盘仰拱及下盘拱顶处于纵断面内的受拉状态,断层面两侧较大范围内的隧道仰拱内侧及墙脚外侧处于横断面内的大偏心受力状态;(2)断层错动后,隧道开裂破坏形态主要包括斜裂缝、纵向裂缝及环向裂缝;(3)正断层黏滑错动达到7.0cm(相当于实际错动量1.75m)后,上盘隧道结构的破坏范围为4.2D(D为隧道跨度),下盘破坏范围为2.4D,上盘破坏范围明显大于下盘。

关键词：正断层黏滑错动地铁隧道模型试验破坏范围

Macrophage Inhibitory Cytokine-1 as a Novel Diagnostic and Prognostic Biomarker in Stage I and II Nonsmall Cell Lung Cancer

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Chinese Medical Journal 2016年第17期129卷 2026-2032页

作者： Yu-Ning Liu Xiao-Bing Wang Teng Wang Chao Zhang Kun-Peng Zhang Xiu-yi zhi wei Zhang Ke-Lin Sun Department of Thoracic Surgery Detection Center of Tumor Biology Cancer Institute and Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100021 China

Background： Increased level of serum macrophage inhibitory cytokine- 1 （MIC- 1 ）, a member oftransfonning growth thctor-β superfamily, was found in patients with epithelial tumors. This study aimed to evaluate whether serum level of MIC-I can be a candidate diagnostic and prognostic indicator for early-stage nonsmall cell lung cancer （NSCLC）. Methods： A prospective study enrolled 152 patients with Stage I-II NSCLC, who were followed up after surgical resection. Forty-eight patients with benign pulmonary disease （BPD） and 105 healthy controls were also included in the study. Serum M IC- 1 levels were measured using an enzyme-linked immunosorbent assay, and the association with clinical and prognostic features was analyzed. Results： In patients with NSCLC, serum protein levels of M IC-I were significantly increased compared with healthy controls and BPD patients （all P 〈 0.001 ）. A threshold of 1000 pg/ml ofM IC-1 was found in patients with early-stage （Stage 1 and II） NSCLC, with sensitivity and specificity of 70.4% and 99.0%, respectively. The serum levels ofMIC- ] were associated with age （P = 0.001 ）, gender （P = 0.030）, and T stage （P = 0.022）. Serum MIC-1 threshold of 1465 pg/ml was found in patients with poor early outcome, with sensitivity and specificity of 72.2% and 66.1%, respectively. The overall 3-year survival rate of NSCLC patients with high serum levels of MIC-1 （〉I 465 pg/ml） was lower than that of NSCLC patients with low serum MIC-1 levels （77.6% vs. 94.8%）. Multivariate Cox regression survival analysis showed that a high serum level ofMIC- 1 was an independent risk factor lbr reduced overall survival （hazard ratio - 3.37, 95% confidential interval： 1.09-10.42, P = 0.035）. Conclusion： The present study suggested that serum M1C-I may be a potential diagnostic and prognostic biomarker ~cbr patients with early-stage NSCLC.

关键词： Macrophage Inhibitory Cytokine-1 Nonsmall Cell Lung Cancer Sensitivity Specificity