|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Dual-band simultaneous lasing in MOFs single crystals with Fabry-Perot microcavities显示文摘Multi-band microlasers based on single microcrystalline materials with Fabry-Perot(F-P) cavities are critically and technologically essential. Here, we demonstrate simultaneous dual-band lasing output(615 and 685 nm) in metal-organic frameworks(MOFs) and organic dyes hybrid single crystals, which support F-P resonances. Through a two-step assembly strategy, two different types of cationic pyridinium hemicyanine dye molecules can be encapsulated into the channel pores of anionic bioMOF-1-2 Me successfully. In addition, the employment of the host-guest system significantly increases the dye loading, enhances luminescent efficiency, and diminishes the aggregation-caused quenching(ACQ) effect in the resultant MOFs/dye composites.This finding not only combines the characteristic of MOFs materials with excellent luminescent properties of organic dyes, but also points out a simple and promising strategy to design multi-band microlasers based on F-P mechanism, opening a low-cost avenue for the rational design of miniaturized lasers in the future. | Hongjun Li Huajun He Jiancan Yu Yuanjing Cui Yu Yang Guodong Qian | 2019 | Science China Chemistry2019，62，8： | 6 |
| 2 | Room-temperature lasing from nanophotonic topological cavities显示文摘The study of topological phases of light underpins a promising paradigm for engineering disorder-immune compact photonic devices with unusual properties.Combined with an optical gain,topological photonic structures provide a novel platform for micro-and nanoscale lasers,which could benefit from nontrivial band topology and spatially localized gap states.Here,we propose and demonstrate experimentally active nanophotonic topological cavities incorporating Ⅲ-Ⅴ semiconductor quantum wells as a gain medium in the structure.We observe room-temperature lasing with a narrow spectrum,high coherence,and threshold behaviour.The emitted beam hosts a singularity encoded by a triade cavity mode that resides in the bandgap of two interfaced valley-Hall periodic photonic lattices with opposite parity breaking.Our findings make a step towards topologically controlled ultrasmall light sources with nontrivial radiation characteristics. | Daria Smirnova Aditya Tripathi Sergey Kruk Min-Soo Hwang Ha-Reem Kim Hong-Gyu Park Yuri Kivshar | 2020 | Light(Science & Applications)2020，9，1： | 6 |
| 3 | High-Sensitivity Gas Detection with Air-Lasing-Assisted Coherent Raman Spectroscopy显示文摘Remote or standoff detection of greenhouse gases,air pollutants,and biological agents with innovative ultrafast laser technology attracts growing interests in recent years.Hybrid femtosecond/picosecond coherent Raman spectroscopy is considered as one of the most versatile techniques due to its great advantages in terms of detection sensitivity and chemical specificity.However,the simultaneous requirement for the femtosecond pump and the picosecond probe increases the complexity of optical system.Herein,we demonstrate that air lasing naturally created inside a filament can serve as an ideal light source to probe Raman coherence excited by the femtosecond pump,producing coherent Raman signal with molecular vibrational signatures.The combination of pulse self-compression effect and air lasing action during filamentation improves Raman excitation efficiency and greatly simplifies the experimental setup.The air-lasing-assisted Raman spectroscopy was applied to quantitatively detect greenhouse gases mixed in air,and it was found that the minimum detectable concentrations of CO_(2) and SF_(6) can reach 0.1%and 0.03%,respectively.The ingenious designs,especially the optimization of pump-seed delay and the choice of perpendicular polarization,ensure a high detection sensitivity and signal stability.Moreover,it is demonstrated that this method can be used for simultaneously measuring CO_(2) and SF_(6) gases and distinguishing ^(12)CO_(2) and ^(13)CO_(2).The developed scheme provides a new route for high-sensitivity standoff detection and combustion diagnosis. | Zhihao Zhang Fangbo Zhang Bo Xu Hongqiang Xie Botao Fu Xu Lu Ning Zhang Shupeng Yu Jinping Yao Ya Cheng Zhizhan Xu | 2022 | Ultrafast Science2022，，2： | 4 |
| 4 | Strong exciton-photon interaction and lasing of two-dimensional transition metal dichalcogenide semiconductors显示文摘Two-dimensional(2D)transition metal dichalcogenide(TMDC)semiconductors not only hold great promises for the development of ultra-thin optoelectronic devices with low-energy consumption,but also provide ideal platforms to explore and tailor light-matter interaction,e.g.,the exciton-photon interaction,at the atomic level,due to their atomic thickness,large exciton binding energy,and unique valley properties.In recent years,the exciton-photon interactions in TMDC semiconductor microcavities,including the strong exciton-photon coupling and lasing,have drawn increasing attention,which may open up new application prospects for transparent,on-chip coherent,and quantum light sources.Herein,we review the research progresses of strong exciton-photon interaction and lasing of TMDC semiconductors.First,we introduce the electronic structure,exciton,and emission properties of semiconducting TMDCs in the weak exciton-photon coupling regime.Next,the progresses on strong exciton-photon interaction and exciton-polaritons of these TMDCs are discussed from the aspects of photophysics,materials and fabrications,spectroscopies,and controls.Further,the progresses on TMDC lasers are introduced in the aspects of cavity types and materials,and finally,the challenges and prospects for these fields are discussed. | Liyun Zhao Qiuyu Shang Meili Li Yin Liang Chun Li Qing Zhang | 2021 | Nano Research2021，14，6： | 3 |
| 5 | Controlled fabrication, lasing behavior and excitonic recombination dynamics in single crystal CH3NH3PbBr3 perovskite cuboids显示文摘As a direct bandgap semiconductor, organic-inorganic lead halide perovskite (MAPbX3, MA = CH3NH3, X =Cl, Br, I) have been considered as promising materials for laser due to their excellent optoelectronic properties. The perovskite materials with ID and 2D shapes were widely prepared and studied for Fabry-Perot mode and whispering-gallery-mode (WGM) microcavities, but cuboid-shape is rarely reported. In this work, we successfully fabricated single crystal cuboid-shaped MAPbBr3 perovskite w让h different morphologies, named microcuboid-MAPbBr3 (M-MAPbBr3) and multi-step-MAPbBr3 (MSMAPbBr3), via solvothermal method. Furthermore, the as-prepared *crystals excitonic recombination lifetime under different pumping energy density was studied by time-resolved photoiuminescence (TRPL). Based on controllable morphology and remarkable lasing properties, these cuboid shaped single crystal perovskite could be a promising candidate for small laser, and other optoelectronic devices. | Fangtao Li Junfeng Lu Qinglin Zhang Dengfeng Peng Zheng Yang Qian Xu Caofeng Pan Anlian Pan Tianfeng Li Rongming Wang | 2019 | Science Bulletin2019，64，10： | 2 |
| 6 | Flexible distributed feedback lasers based on nanoimprinted cellulose diacetate with efficient multiple wavelength lasing显示文摘Here we present the assembly of novel transparent all-polymer distributed feedback(DFB)lasers.Flexible and highly transparent cellulose diacetate(CdA)was employed as substrate on which gratings with different periods were engraved by thermal nanoimprinting with high fidelity.Highly luminescent conjugated polymers(CP),poly(9,9-dioctylfluorene)(PFO),poly(9,9-dioctylfluorene-alt-benzothiadiazole)(F8BT),and a blend of F8BT and poly(3-hexylthiophene)-poly(9,9-dioctylfluorene-altbenzothiadiazole)(P3HT:F8BT)were deposited by spin coating onto the nanostructured plastic surfaces,giving rise to perpendicular single-mode lasing emission in the blue,green,and red wavelength ranges,respectively.These lasers show linewidths below 1 nm and low thresholds(≈6μJcm^(−2) for blue and red lasing emission),comparable to other state-of-the-art lasers obtained from similar optical gain materials on rigid substrates.The followed strategy is scalable and versatile,enabling the development of large area nanoimprinted DFB lasers(>1cm^(2))on plastic,which is highly relevant for applications in various markets. | José R.Castro Smirnov Ahmad Sousaraei Manuel R.Osorio Santiago Casado Jaime J.Hernández Longfei Wu Qi Zhang Ruidong Xia Daniel Granados Reinhold Wannemacher Isabel Rodriguez Juan Cabanillas-Gonzalez | 2019 | npj Flexible Electronics2019，3，1： | 2 |
| 7 | Realization of directional single-mode lasing by a GaN-based warped microring显示文摘Multimode and random directionalities are major issues restricting the application of whispering gallery mode microcavity lasers.We demonstrated a 40μm diameter microring with an off-centered embedded hole and warped geometry from strained III-nitride quantum well multilayers.Single-mode directional whispering gallery mode lasing was achieved by the warped structure and high-order mode suppression induced by the off-centered hole.In addition,the introduction of the off-centered hole reduced the lasing threshold from 3.24 to 2.79 MW/cm^(2) compared with the warped microdisk without an embedded hole while maintaining a high-quality factor of more than 4000.Directional light emission in 3D was achieved and attributed to the warped structure,which provides a vertical component of the light emission,making it promising for building multifunctional coherent light sources in optoelectronic integration. | Shengnan Zhang Yufeng Li Peng Hu Zhenhuan Tian Qiang Li Aixing Li Ye Zhang Feng Yun | 2021 | Photonics Research2021，9，4： | 2 |
| 8 | Low threshold random lasing in dye-doped and strongly disordered chiral liquid crystals显示文摘Random lasing was experimentally investigated in pyrromethene 597-doped strongly disordered chiral liquid crystals (CLCs) composed of the nematic liquid crystal SLC1717 and the chiral agent CB15. The concentration of the chiral agent tuned the bandgap, and disordered CLC microdomains were achieved by fast quenching of the mixture from the isotropic to the cholesteric phase. Random lasing and band edge lasing were observed synchronously, and their behavior changed with the spectral location of the bandgap. The emission band for band edge lasing shifted with the change of the bandgap, while the emission band for random lasing remained practically constant. The results show that the threshold for random lasing sharply decreases if the CLC selective reflection band overlaps with the fluorescence peak of the dye molecules and if the band edge coincides at the same time with the excitation wavelength. | SHAOHUA GAO JIAYI WANG WENHUA LI XUANYI YU XINZHENG ZHANG XIAO SONG ANDREY ILJIN IRENA DREVENSEK-OLENIK ROMANO A.RUPP JINGJUN XU | 2020 | Photonics Research2020，8，5： | 2 |
| 9 | Effect of starting materials and sintering temperature on microstructure and optical properties of Y203:Yb^(3+)5 at%transparent ceramics显示文摘Y2O3:Yb^(3+)5 at%ceramics have been synthesized by the reactive sintering method using different commercial yttria powders(Alfa-Micro,Alfa-Nano,and ITO-V)as raw materials.It has been shown that all Y2O3 starting powders consist from agglomerates up to 5-7 μm in size which are fonned from 25-60 nm primary particles.High-energy ball milling allows to significantly decreasing the median particle size D50 below 500 nm regardless of the commercial powders used.Sintering experiments indicate that powder mixtures fabricated from Alfa-Nano yttria powders have the highest sintering activity,while(Y0.86La0.09Yb0.05)2O3 ceramics sintered at 1750℃for 10 h are characterized by the highest transmittance of about 45%.Y2O3:Yb^(3+)ceramics have been obtained by the reactive sintering at 1750-1825℃using Alfa-Nano Y2O3 powders and La2O3+Zr02 as a complex sintering aid.The effects of the sintering temperature on densification processes,microstructure,and optical properties of Y2O3:Yb^(3+)5 at%ceramics have been studied.It has been shown that Zr^(4+)ions decrease the grain growth of Y2O3:Yb^(3+)ceramics for sintering temperatures 1750-1775℃.Further increasing the sintering temperature was accompanied by a sharp increase of the average grain size of ceramics referred to changes of structure and chemical composition of grain boundaries,as well as their mobility.It has been determined that the optimal sintering temperature to produce high-dense yttria ceramics with transmittance of 79%-83%and average grain size of 8μm is 1800℃.Finally,laser emission at〜1030.7 nm with a slope efficiency of 10%was obtained with the most transparent Y203:Yb^(3+)5 at%ceramics sintered. | R.P.YAVETSKIY A.E.BALABANOV S.V.PARKHOMENKO O.S.KRYZHANOVSKA A.G.DOROSHENKO P.V.MATEYCHENKO A.V.TOLMACHEV Jiang LI Nan JIANG L.GHEORGHE M.ENCULESCU | 2021 | Journal of Advanced Ceramics2021，10，1： | 2 |
| 10 | Tuning Curves of 70 MHz Frequency Differences for HeNe Standing-Wave Lasers显示文摘Two experiments are reported on measuring the variation of the frequency differences for the st&nding wave lasers with tuning the cavity length.The frequency difference is caused by an intracavity quartz crystal plate(laser mode splitting technology).The relative variation of the frequency difference during the tuning are about 10^(-3) order from the edge to the centre of lasing bandwidth.The diiFerence between the largest and the smallest frequency differences is two orders as large as that of ring lasers. | ZHANG Shulian HAN Yanmei | 1993 | Chinese Physics Letters1993，10，12： | 2 |
| 11 | 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 |
| 12 | Impact of carrier transport on the performance of QD lasers on silicon:a drift-diffusion approach显示文摘The operation of quantum dot lasers epitaxially grown on silicon is investigated through a quantum-corrected Poisson-drift-diffusion model.This in-house developed simulation framework completes the traditional rate equation approach,which models the intersubband transitions involved into simultaneous ground-state and excited-state lasing,with a physics-based description of carrier transport and electrostatic effects.The code is applied to look into some of the most relevant mechanisms affecting the lasing operation.We analyze the impact of threading dislocations on non-radiative recombination and laser threshold current.We demonstrate that asymmetric carrier transport in the barrier explains the ground-state power quenching above the excited-state lasing threshold.Finally,we study p-type modulation doping and its benefits/contraindications.The observation of an optimum doping level,minimizing the ground-state lasing threshold current,stems from the reduction of the electron density,which counteracts the benefits from the expected increase of the hole density.This reduction is due to electrostatic effects hindering electron injection. | MARCO SALDUTTI ALBERTO TIBALDI FEDERICA CAPPELLUTI MARIANGELA GIOANNINI | 2020 | Photonics Research2020，8，8： | 1 |
| 13 | Phonon engineering in Yb:La_(2)CaB_(10)O_(19)crystal for extended lasing beyond the fluorescence spectrum显示文摘Since the first invention of the laser in 1960,direct lasing outside the fluorescence spectrum is deemed impossible owing to the“zero-gain”cross-section.However,when electron-phonon coupling meets laser oscillation,an energy modulation by the quantized phonon can tailor the electronic transitions,thus directly creating some unprecedented lasers with extended wavelengths by phonon engineering.Here,we demonstrate a broadband lasing(1000-1280 nm)in a Yb-doped La_(2)CaB_(10)O_(19)(Yb:LCB)crystal,far beyond its spontaneous fluorescence spectrum.Numerical calculations and in situ Raman verify that such a substantial laser emission is devoted to the multiphonon coupling to lattice vibrations of a dangling“quasi-free-oxygen”site,with the increasing phonon numbers step-by-step(n=1–6).This new structural motif provides more alternative candidates with strong-coupling laser materials.Moreover,the quantitative relations between phonon density distribution and laser wavelength extension are discussed.These results give rise to the search for on-demand lasers in the darkness and pave a reliable guideline to study those intriguing electron-phonon-photon coupled systems for integrated photonic applications. | Yanling Cheng Fei Liang Dazhi Lu Jingcheng Feng Guochun Zhang Haohai Yu Huaijin Zhang Yicheng Wu | 2023 | Light(Science & Applications)2023，12，9： | 1 |
| 14 | Nitrogen air lasing induced by multiple filaments array显示文摘Air lasing emission by launching intense ultrafast laser pulses in atmosphere has recently attracted increasing interest in the ultrafast laser science and atmospheric science fields,especially for remote sensing techniques.We demonstrated the fluorescence emissions at 337 nm,357 nm and 391 nm induced by multiple filaments using four kinds of step phase plates.Our results have indicated that the fluorescence signal has been amplified as it propagates along the filament through amplified spontaneous emission(ASE),and the fluorescence intensity is also enhanced in the backward direction via multiple filaments.Furthermore,the gain coefficient through ASE is increased with the number of filaments. | ZHU Di LI Chunhua GAO Zhongkun SUN Xiaodong GAO Hui | 2022 | Optoelectronics Letters2022，18，6： | 1 |
| 15 | Air lasing: Phenomena and mechanisms显示文摘Air lasing is a concept that refers to remote no-cavity(mirrorless) optical amplification in ambient air with the air constituents as the gain media. Due to the high potential of air lasing in view of applications in atmospheric sensing, a variety of pumping schemes have been proposed so far for building up population-inverted gain media in air and producing forward and/or backward directional lasing emissions. This review paper presents an overview of recent advances in the experimental observations and physical understanding of air lasing in various pumping schemes of air molecules by intense laser fields. Special emphasis is given to the strong-field-induced N^+2 air lasing, the mechanism of which is currently still in a hot debate. | 李贺龙 姚丹雯 王思琪 付尧 徐淮良 | 2019 | Chinese Physics B2019，28，11： | 1 |
| 16 | Wavelength-Tunable Single-Mode Microlasers Based on Photoresponsive Pitch Modulation of Liquid Crystals for Information Encryption显示文摘Information encryption and decryption have attracted particular attention;however,the applications are frequently restricted by limited coding capacity due to the indistinguishable broad photoluminescence band of conventional stimuli-responsive fluorescent materials.Here,we present a concept of confidential information encryption with photoresponsive liquid crystal(LC)lasing materials,which were used to fabricate ordered microlaser arrays through a microtemplate-assisted inkjet printing method.LC microlasers exhibit narrow-bandwidth single-mode emissions,and the wavelength of LC microlasers was reversibly modulated based on the optical isomerization of the chiral dopant in LCs.On this basis,we demonstrate phototunable information authentication on LC microlaser arrays using the wavelength of LC microlasers as primary codes.These results provide enlightenment for the implementation of microlaser-based cryptographic primitives for information encryption and anticounterfeiting applications. | Fa-Feng Xu Zhong-Liang Gong Yu-Wu Zhong Jiannian Yao Yong Sheng Zhao | 2020 | Research2020，，1： | 1 |
| 17 | GaAs基纳米线的光学性质和激射显示文摘工作在红外波段的砷化镓(GaAs)基纳米线激光器在集成光电子学中起着重要作用.在过去的十几年中,纳米线激光器领域发展迅速,但是与工作在紫外和可见波段的材料相比,由于GaAs基材料的特性,近红外激光器的实现相对困难.在本文中,我们着重介绍了GaAs基纳米线的最新进展,特别是GaAs纳米线的光学性质和激射特性.详细介绍了GaAs纳米线的生长机理,包括晶相控制和复杂结构的生长.回顾并讨论了GaAs基纳米线的光学性质的影响因素和改进方法.最后,展示了GaAs基纳米线激光器的设计及其最新进展. | 李浩林 陈宇婷 魏志鹏 陈锐 | 2020 | Science China Materials2020，63，8： | 1 |
| 18 | A simple three-level resonant model of lasing without inversion显示文摘Recently more attention has been paid to the study of lasing without population inver-sion. It has been found that many schemes, with the help of optical coherence or quantuminterference effect, may establish such optical phenomenon as that in refs. [1-7]. In thoselaser models, in order to have the optical gain on the corresponding transition a coherentpump is required to drive the systems, and additional pumps, coherent or incoherent, | 龚尚庆 徐至展 潘少华 | 1995 | Chinese Science Bulletin1995，40，9： | 1 |
| 19 | Side-Chain Engineering of Organic Crystals for Lasing Media with Tunable Flexibility显示文摘Abundant high-performance organic crystals have been reported in the past decades;however,applications of crystalline materials are seriously restricted by their notorious brittleness.Recently,some organic crystals have been designed to be deformable in response to stress,light,heat,or humidity;nevertheless,the development of flexible organic crystals currently relies on a molecular framework design.So far there is no effective strategy for constructing organic crystals with tunable flexibility based on the same luminescent skeleton.Herein,we propose a side-chain engineering strategy aimed at facilely modulating the mechanical compliance of organic crystals.Subtly changing the side chains of a single-benzeneπ-skeleton greatly alters the mechanical behaviors while maintaining the unique optical functions of the produced crystals.Optical waveguides and amplified spontaneous emissions were measured to evaluate the application potentials of the flexible crystals as soft optical transducing media.We anticipate that the proposed strategy will be expanded to regulate the mechanical compliance of other organic crystals with unique emission properties.In addition,the applications attempted preliminarily here highlight the superiority of“crystal flexibility”in flexible optoelectronics for some special application scenarios that require complex and shape changeable optical circuits. | Baolei Tang Shiyue Tang Cheng Qu Kaiqi Ye Zuolun Zhang Hongyu Zhang | 2023 | CCS Chemistry2023，5，10： | 1 |
| 20 | Lasing emission of dye-doped cholesteric liquid crystal microdroplet wrapped by polyglycerol in hollow glass microsphere显示文摘In this Letter,a dye-doped cholesteric liquid crystal(DDCLC)-filled hollow glass microsphere is demonstrated to be a resonator with good temperature response.A diglycerol layer is used to wrap the DDCLCs microdroplet to keep it steady and control its orientation.The whispering gallery mode(WGM)lasing and photonic band gap(PBG)lasing caused by two different mechanisms were obtained under the pump of a pulsed laser,and the temperature response of these two kinds of lasing was studied.For the liquid crystal and chiral material used in this Letter,both the WGM lasing and the PBG lasing have a blue shift in wavelength with increasing temperature. | 张弛 付冬颖 夏春莉 姚丽双 卢春莲 孙伟民 刘永军 | 2020 | Chinese Optics Letters2020，18，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员