|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Advances in metal halide perovskite lasers: synthetic strategies, morphology control, and lasing emission显示文摘.In the past decade,lead halide perovskites have emerged as potential optoelectronic materials in the fields of light-emitting diode,solar cell,photodetector,and laser,due to their low-cost synthesis method,tunable bandgap,high quantum yield,large absorption,gain coefficient,and low trap-state densities.In this review,we present a comprehensive discussion of lead halide perovskite applications,with an emphasis on recent advances in synthetic strategies,morphology control,and lasing performance.In particular,the synthetic strategies of solution and vapor progress and the morphology control of perovskite nanocrystals are reviewed.Furthermore,we systematically discuss the latest development of perovskite laser with various fundamental performances,which are highly dependent on the dimension and size of nanocrystals.Finally,considering current challenges and perspectives on the development of lead halide perovskite nanocrystals,we provide an outlook on achieving high-quality lead perovskite lasers and expanding their practical applications. | Zhiping Hu Zhengzheng Liu Zijun Zhan Tongchao Shi Juan Du Xiaosheng Tang Yuxin Leng | 2021 | Advanced Photonics2021，3，3： | 5 |
| 2 | Femtosecond mid-IR optical vortex laser based on optical parametric chirped pulse amplification显示文摘A femtosecond mid-infrared optical vortex laser can be used for high harmonic generation to extend cutoff energy to the kilo-electron-volt range with orbital angular momentum,as well as other secondary radiations.For these,we demonstrate a high-energy femtosecond 4μm optical vortex laser based on optical parametric chirped pulse amplification(OPCPA)for the first time.The optical vortex seed is generated from a femtosecond 4μm laser by a silicon spiral phase plate with the topological charge l of 1 before the stretcher.Through using a two-stage collinear OPCPA amplifier,the chirped vortex pulse is amplified to 12.4 m J with 200 nm full width at half-maximum bandwidth.After compression,the vortex laser pulse with 9.53 m J,119 fs can be obtained.Furthermore,the vortex characteristics of the laser beam are investigated and evaluated.This demonstration can scale to generate a higher-peak-power vortex mid-IR laser and pave a new way for high field physics. | JUNYU QIAN YUJIE PENG YANYAN LI PENGFEI WANG BEIJIE SHAO ZHE LIU YUXIN LENG RUXIN LI | 2020 | Photonics Research2020，8，3： | 4 |
| 3 | High-repetition-rate, high-peak-power 1450 nm laser source based on optical parametric chirped pulse amplification显示文摘We present a high-peak-power,near-infrared laser system based on optical parametric chirped pulse amplification pumped by a home-built picosecond pumping laser,which can generate over 40 mJ energy at 1450 nm center wavelength and operate at 100 Hz repetition rate.Subsequently,the chirped laser pulses are compressed down to 60 fs with 26.5 mJ energy,corresponding to a peak power of 0.44 TW. This high-energy,long-wavelength laser source is highly suitable for driving various nonlinear optical phenomena,such as high-order harmonic generation and high-flux coherent extreme ultraviolet/soft X-ray radiation. | Pengfei Wang Beijie Shao Hongpeng Su Xinlin Lv Yanyan Li Yujie Peng Yuxin Leng | 2019 | High Power Laser Science and Engineering2019，7，2： | 2 |
| 4 | Principles to tailor the saturable and reverse saturable absorption of epsilon-near-zero material显示文摘Indium tin oxide(ITO) films have recently emerged as a new class of functional materials for nonlinear optical(NLO) devices due to their exotic properties around epsilon-near-zero(ENZ) wavelength. Here, we experimentally investigated and tailored the NLO absorption properties of ITO films. The NLO absorption response of ITO films is investigated by using the femtosecond Z-scan measurement technique at two different wavelengths of 1030 nm(out of ENZ region) and 1440 nm(within ENZ region). Interestingly, we observed conversion behavior from saturable absorption(SA) to reverse saturable absorption(RSA) at 1030 nm with the increasing incident laser intensity, whereas only SA behavior was observed at 1440 nm. We demonstrate that SA behavior was ascribed to ground-state free electrons bleaching in the conduction band, and RSA was attributed to three-photon absorption. Moreover, results reveal that ITO film shows more excellent SA performance at 1440 nm with a nonlinear absorption coefficient of ~-23.2 cm∕GW and a figure of merit of ~1.22 × 10^(-16) esu · cm.Furthermore, we tailored the SA and RSA behaviors of ITO films at 1030 and 1440 nm wavelengths via post-annealing treatment. The modulatable NLO absorption was ascribed to the changing of free-carrier concentration in ITO films via annealing treatment. The experimental findings offered an inroad for researchers to tailor its NLO absorption properties by changing the free-carrier concentration through chemical modification such as annealing, oxidation, or defect implantation. The superior and tunable nonlinear optical response suggests that ITO film might be employed as a new class material with potential applications in novel optical switches or optical limiters to realize the all-optical information process. | HAO MA YUANAN ZHAO YUCHEN SHAO YAFEI LIAN WEILI ZHANG GUOHANG HU YUXIN LENG JIANDA SHAO | 2021 | Photonics Research2021，9，5： | 2 |
| 5 | The 1 PW/0.1 Hz laser beamline in SULF facility显示文摘In this paper,we report the recent progress on the 1 PW/0.1 Hz laser beamline of Shanghai Superintense Ultrafast Laser Facility(SULF).The SULF-1 PW laser beamline is based on the double chirped pulse amplification(CPA)scheme,which can generate laser pulses of 50.8 J at 0.1 Hz after the final amplifier;the shot-to-shot energy fluctuation of the amplified pulse is as low as 1.2%(std).After compression,the pulse duration of 29.6 fs is achieved,which can support a maximal peak power of 1 PW.The contrast ratio at-80 ps before main pulse is measured to be 2.5×10^-11.The focused peak intensity is improved by optimizing the angular dispersion in the grating compressor.The maximal focused peak intensity can reach 2.7×10^19W/cm2 even with an f/26.5 off-axis parabolic mirror.The horizontal and vertical angular pointing fluctuations in 1 h are measured to be 1.89 and 2.45μrad,respectively.The moderate repetition rate and the good stability are desirable characteristics for lasermatter interactions.The SULF-1 PW laser beamline is now in the phase of commissioning,and preliminary experiments of particle acceleration and secondary radiation under 300–400 TW/0.1 Hz laser condition have been implemented.The progress on the experiments and the daily stable operation of the laser demonstrate the availability of the SULF-1 PW beamline. | Zongxin Zhang Fenxiang Wu Jiabing Hu Xiaojun Yang Jiayan Gui Penghua Ji Xingyan Liu Cheng Wang Yanqi Liu Xiaoming Lu Yi Xu Yuxin Leng Ruxin Li Zhizhan Xu | 2020 | High Power Laser Science and Engineering2020，8，1： | 2 |
| 6 | Timely renal replacement therapy linked to better outcome in patients with sepsis-associated acute kidney injury显示文摘Background:Recent studies suggest that acute kidney injury(AKI)can be treated with renal replacement therapy(RRT).However,its benefits to patients with sepsis-associated AKI(SA-AKI),which is linked to high mortality and morbidity rates,remain under debate.The aim of this study was to compare the outcomes of different RRT strategies for patients with SA-AKI.Methods:This retrospective study evaluated patients who were admitted to the hospital with sepsis and devel-oped SA-AKI during hospitalization from 1st January 2014 to 31st January 2019.Mortality,renal recovery,and systemic organ function at 90 days following admission were compared between the RRT group(RG)and non-RRT group(NRG),as well as the early-RRT group(EG)and delayed-RRT group(DG).The groups were defined according to the time from admission to RRT initiation(criterion 1,EG1 and DG1)and Kidney Disease Improving Global Outcomes(KDIGO)classification(criterion 2,EG2 and DG2).Categorical and continuous variables were compared using the chi-squared test or Fisher’s exact test and Student’s t-test or Wilcoxon test.Kaplan-Meier curves were constructed to determine the unadjusted survival rates for the different subgroups.Results:A total of 116 patients were included in this study;of those,38 received RRT and 46 expired within 90 days.Among different strategies of RRT,there were no significant differences found in 90-day mortality(RG vs.NRG:��2=0.610,P=0.435;EG1 vs.DG1:��2=0.835,P=0.360;EG2 vs.DG2:��2=0.022,P=0.899)and renal recovery.However,the values of change in sequential organ failure assessment(ΔSOFA)max-min of patients in the EG and RG were significantly higher than those recorded in the NRG(ΔSOFA RG=7.0,ΔSOFA NRG=3.60,ΔSOFA EG1=9.00,ΔSOFA EG2=6.30;P<0.050).Also,the 90-day renal recovery in the EG was better than that noted in the DG with criterion 1(87.5%vs.38.5%,respectively,��2=10.425,P=0.032),suggesting that RRT(especially timely RRT)may be beneficial to the restoration of systemic organ function in patients with SA-AKI.Conclusion:RRT did not reduce the 90-day mortality among patients with SA-AKI.However,timely RRT may benefit the restoration of systemic organ function,thereby improving the quality of life of patients. | Yiwen Fan Liang Chen Shaowei Jiang Yingying Huang Yuxin Leng Chengjin Gao | 2022 | Journal of Intensive Medicine2022，2，3： | 2 |
| 7 | Pulse combination and compression in hollow-core fiber for few-cycle intense mid-infrared laser generation显示文摘The generation of high-peak-power,few-cycle mid-infrared(MIR)pulses using coherent beam combination and nonlinear pulse compression techniques simultaneously is demonstrated.The two pulses,with identical pulse energy of 2.8 mJ and pulse duration of 160 fs,are coherently combined at the input end of a krypton-filled hollow-core fiber(HCF),and then the bandwidth of the combined pulse is broadened to near an optical octave due to strong phase modulations,and the temporal width is compressed into a few-cycle regime.Finally,a 2.7 mJ,22.9 fs,20 Hz laser at 4μm can be obtained,and the pulse peak power is greatly enhanced compared with that of conventional single-channel optical parametric chirped pulse-amplification systems.Furthermore,the peak power generated from this system has the prospect of further scaling up through use of more channels of coherent combination,which can pave a way to generate higher peak power ultra-intense MIR pulses for strong-field physics. | Junyu Qian Pengfei Wang Yujie Peng Yanyan Li Beijie Shao Hongpeng Su Xinlin Lv Ding Wang Yuxin Leng Ruxin Li | 2021 | Photonics Research2021，9，4： | 2 |
| 8 | Mode selection and high-quality upconversion lasing from perovskite CsPb2Br5 microplates显示文摘In recent years,halide perovskite nanostructures have had great advances and have opened up a bright future for micro/nanolasers.However,upconversion lasing by two-photon excitation with mode selection and high quality factor in one device is still rarely reported.Herein,two lasing modes are demonstrated in the all-inorganic perovskite CsPb2Br5 microplates with subwavelength thickness and uniform square shape.The net optical gain is quickly established in less than 1 ps and persists more than 30 ps,revealed by ultrafast transient absorption spectroscopy.The temperature-dependent low-threshold amplified spontaneous emission confirms the net gain for stimulated emission with a high characteristic temperature of 403 K,far surpassing the all-inorganic CsPbBr3 semiconductor gain media.Remarkably,upconversion lasing based on two kinds of microcavity effects,Fabry–Pérot and whispering-gallery modes,from the microplates at room temperature is successfully achieved with a low threshold operating in multi-or single-mode,respectively.Surprisingly,the quality factor(~3551)is among the best values obtained from perovskite micro/nanoplate upconversion lasers without an external cavity.Moreover,the highly stable chromaticity with color drift only less than 0.1 nm also outbalances the all-inorganic CsPbBr3 ones.These superior performances of CsPb2Br5 microplate lasing with a facile solution synthesis procedure will offer a feasible structure to fabricate specific functionalities for high-performance frequency upconversion micro/nanoscale photonic integrated devices. | ZHENGZHENG LIU CHUNWEI WANG ZHIPING HU JUAN DU JIE YANG ZEYU ZHANG TONGCHAO SHI WEIMIN LIU XIAOSHENG TANG AND YUXIN LENG | 2020 | Photonics Research2020，8，9： | 2 |
| 9 | Femtosecond infrared optical vortex lasers based on optical parametric amplification显示文摘Infrared femtosecond optical vortices open up many new research fields,such as optical micro–nano manipulation,time-resolved nonlocal spectroscopy in solids,vortex secondary radiation and particle generations.In this article,we demonstrate a femtosecond optical vortex laser system based on a two-stage optical parametric amplifier.In our experiment,1.45µm vortex signal pulses with energy of 190µJ and 1.8µm vortex idler pulses with energy of 158µJ have been obtained,and the pulse durations are 51 and 48 fs,respectively.Both the energy fluctuations of the signal and idler pulses are less than 0.5%(root mean square),and the spectral fluctuations are less than 1.5%within 1 hour.This type of highly stable femtosecond optical vortex laser has a wide range of applications for vortex strong-field physics. | Renyu Feng Junyu Qian Yujie Peng Yanyan Li Wenkai Li Yuxin Leng Ruxin Li | 2022 | High Power Laser Science and Engineering2022，10，5： | 1 |
| 10 | Forty-five terawatt vortex ultrashort laser pulses from a chirped-pulse amplification system显示文摘We report on a vortex laser chirped-pulse amplification(CPA)system that delivers pulses with a peak power of 45 TW.A focused intensity exceeding 1019 W/cm2 has been demonstrated for the first time by the vortex amplification scheme.Compared with other schemes of strong-field vortex generation with high energy flux but narrowband vortex-converting elements at the end of the laser,an important advantage of our scheme is that we can use a broadband but size-limited q-plate to realize broadband mode-converting in the front end of the CPA system,and achieve high-power amplification with a series of amplifiers.This method is low cost and can be easily implemented in an existing laser system.The results have verified the feasibility to obtain terawatt and even petawatt vortex laser amplification by a CPA system,which has important potential applications in strong-field laser physics,for example,generation of vortex particle beams with orbital angular momentum,fast ignition for inertial confinement fusion and simulation of the extreme astrophysical environment. | Zhenkuan Chen Shuiqin Zheng Xiaoming Lu Xinliang Wang Yi Cai Congying Wang Maijie Zheng Yuexia Ai Yuxin Leng Shixiang Xu Dianyuan Fan | 2022 | High Power Laser Science and Engineering2022，10，5： | 1 |
| 11 | 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 |
| 12 | 13.4 fs,0.1 Hz OPCPA Front End for the 100 PW-Class Laser Facility显示文摘Here,we report the recent progress on the front end developed for the 100 PW-class laser facility.Using 3 stages of optical parametric chirped-pulse amplification(OPCPA)based on lithium triborate(LBO)crystals,we realized a 5.26 J/0.1 Hz amplified output with a bandwidth over 200 nm near the center wavelength of 925 nm.After the compressor,we obtained a pulse duration of 13.4 fs.As the compression efficiency reached 67%,this OPCPA front end could potentially support a peak power of 263 TW at a repetition rate of 0.1 Hz.To the best of our knowledge,among all the 100 TW-level OPCPA systems,it shows the widest spectral width,the shortest pulse duration,and it is also the first OPCPA system working at a repetition-rate mode. | Xinliang Wang Xingyan Liu Xiaoming Lu Junchi Chen Yingbin Long Wenkai Li Haidong Chen Xun Chen Peile Bai Yanyan Li Yujie Peng Yanqi Liu Fenxiang Wu Cheng Wang Zhaoyang Li Yi Xu Xiaoyan Liang Yuxin Leng Ruxin Li | 2022 | Ultrafast Science2022，，3： | 1 |
| 13 | Splicing technology of Ti:sapphire crystals for a high-energy chirped pulse amplifier laser system显示文摘We develop a splicing technology of Ti:sapphire crystals for a high-energy chirped pulse amplifier laser system that can suppress the parasitic lasing to improve the amplification efficiency compared to a large-size single Ti:sapphire crystal amplifier. Theoretical investigations on the characteristics of the amplifier with four splicing Ti:sapphire crystals,such as parasitic-lasing suppression and amplification efficiencies, are carried out. Some possible issues resulting from this splicing technology, including spectral modulation, stretching or splitting of the temporal profile, and the sidelobe generation in the spatial domain(near field and far field), are also investigated. Moreover, the feasibility of the splicing technology is preliminarily demonstrated in an experiment with a small splicing Ti:sapphire crystals amplifier. The temporal profile and spatial distribution of the output pulse from the splicing Ti:sapphire crystal amplifier are discussed in relation to the output pulse from a single Ti:sapphire crystal amplifier. | Yanqi Liu Yuxin Leng Xiaoming Lu Yi Xu Cheng Wang | 2014 | High Power Laser Science and Engineering2014，2，2： | 1 |
| 14 | Broadband spectral shaping in a Ti:sapphire regenerative amplifier显示文摘 | Yuxin Leng Lihuang Lin Wenyao Wang Yunhua Jiang Bin Tang Zhizhan Xu | 2003 | Optics and Laser Technology2003，，6： | 1 |
| 15 | Double grating expanders for fourth-order dispersion compensation in chirped pulse amplifiers显示文摘 | Wang Cheng Leng Yuxin | 2013 | Chinese Physics Letter2013，30，04： | 1 |
| 16 | Yb^(3+)-doped Fluorophosphate Glass with High Cross Section and Lifetime显示文摘Yb3+ doped fluorophosphate (FP/Yb) glasses with emission cross section and fluorescence lifetime as high as 0.8388×10-20 cm 2 and 2.3 ms were developed,and AlF3 content is proved to decrease the lifetime obviously.Large scale glass casting procedure shows high Tx-Tg doesn t make better casting crystallization stability in certainty.Although Yb laser is difficult to be obtained in FP glass,a 230 mw laser was still achieved from 2 mm thick samples under 976 nm LD excitation because of the large gain parameter(σemiτf) of the FP/Yb glass.Lasing test also proved the relationship between laser output and gain parameter.Combined with its wide and flat effective gain property,this FP/Yb glass is a practical new potential material for low power ultra-short pulse application. | Liyan Zhang Yuxin Leng Junjie Zhang Lili Hu | 2010 | Journal of Materials Science & Technology2010，26，10： | 1 |
| 17 | High-energy,high-repetition-rate ultraviolet pulses from an efficiency-enhanced,frequency-tripled laser显示文摘In this study,a high-energy,temporally shaped picosecond ultraviolet(UV)laser running at 100 Hz is demonstrated,with its pulses boosted to 120 mJ by cascaded regenerative and double-pass amplifiers,resulting in a gain of more than 10^(8).With precise manipulation and optimization,the amplified laser pulses were flat-top in the temporal and spatial domains to maintain high filling factors,which significantly improved the conversion efficiency of the subsequent third harmonic generation(THG).Finally,91 mJ,470 ps pulses were obtained at 355 nm,corresponding to a conversion efficiency as high as 76%,which,as far as we are aware of,is the highest THG efficiency for a high-repetition-rate picosecond laser.In addition,the energy stability of the UV laser is better than 1.07%(root mean square),which makes this laser an attractive source for a variety of fields including laser conditioning and micro-fabrication. | Xinlin Lu Yujie Peng Wenyu Wang Yuanan Zhao Xiangyu Zhu Yuxin Leng | 2021 | High Power Laser Science and Engineering2021，9，3： | 1 |
| 18 | Biomarkers measured by cytokinesis-block micronucleus cytome assay for evaluating genetic damages induced by polycyclic aromatic hydrocarbons显示文摘 | Huawei Duan Shuguang Leng Zufei Pan Yufei Dai Yong Niu Chuanfeng Huang Ping Bin Yadong Wang Qingjun Liu Wen Chen Yuxin Zheng | 2009 | MutRes-Genetic Toxicology and Environmental Mutagenesis2009，，1： | 1 |
| 19 | Nonlinear temporal pulse cleaning techniques and application显示文摘Two different pulse cleaning techniques for ultra-high contrast laser systems are comparably analysed in this work.The first pulse cleaning technique is based on noncollinear femtosecond optical-parametric amplification(NOPA)and second-harmonic generation(SHG)processes.The other is based on cross-polarized wave(XPW)generation.With a double chirped pulse amplifier(double-CPA)scheme,although temporal contrast enhancement in a high-intensity femtosecond Ti:sapphire chirped pulse amplification(CPA)laser system can be achieved based on both of the techniques,the two different pulse cleaning techniques still have their own advantages and are suitable for different contrast enhancement requirements of different laser systems. | Yi Xu Jianzhou Wang Yansui Huang Yanyan Li Xiaomin Lu Yuxin Leng | 2013 | High Power Laser Science and Engineering2013，1，2： | 1 |
| 20 | Nonlinear optical properties of CsPbCl_(x)Br_(3-x)nanocrystals embedded glass显示文摘All-inorganic perovskite has attracted significant attention due to its excellent nonlinear optical characteristics.Stable and low-toxic perovskite materials have great application prospects in optoelectronic devices.Here,we study the nonlinear optical properties of CsPbCl_(x)Br_(3-x)(x=1,1.5,2)nanocrystals(NCs)glass by open-aperture Z-scan.It is found that the two-(2 PA)and three-photon absorption(3 PA)intensity can be adjusted by the treatment temperature and the ratio of halide anions.The perovskite NCs glass treated at a high temperature has better crystallinity,resulting in stronger nonlinear absorption performance.In addition,the value of the 2 PA parameter of CsPbCl_(1.5)Br_(1.5)NCs glasses decreases when the incident pump intensity increases,which is ascribed to the saturation of 2 PA and population inversion.Finally,the research results show that the 2 PA coefficient(0.127 cm GW-1)and 3 PA coefficient(1.21×10^(-5)cm^(3)GW-2)of CsPbCl_(1)Br_(2)NCs glass with high Br anion content are larger than those of CsPbCl_(2)Br_(1)and CsPbCl_(1.5)Br_(1.5)NCs glasses.This is mainly due to the greater influence of Br anions on the symmetry of the perovskite structure,which leads to the redistribution of delocalized electrons.The revealed adjustable nonlinear optical properties of perovskite NCs glass are essential for developing stable and high-performance nonlinear optical devices. | CHENJING QUAN XIAO XING SIHAO HUANG MENGFEIFEI JIN TONGCHAO SHI ZEYU ZHANG WEIDONG XIANG ZHANSHAN WANG YUXIN LENG | 2021 | Photonics Research2021，9，9： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员