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High Power Laser Science and Engineering 2019年第3期7卷 95-101页

作者： Zhengru Guo Qiang Hao Junsong Peng heping zeng Shanghai Key Laboratory of Modern Optical System and Engineering Research Center of Optical Instrument and SystemMinistry of EducationSchool of Optical Electrical and Computer EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200062China

We report on environmentally stable long-cavity ultrashort erbium-doped fiber lasers,which self-start mode-locking at quite low thresholds by using spectrally filtered and phase-biased nonlinear amplifying long-loop *** employing 100-m polarization-maintaining fiber(PMF)in the nonlinear loop,the fundamental repetition rate reaches 1.84 MHz and no practical limitation is found to further decrease the repetition *** filter used in the long loop not only suppresses Kelly sidebands of the solitons,but also eliminates the amplified spontaneous emission which exists widely in lowrepetition-rate ultrafast fiber *** bandwidth of the filter is optimized by using a numerical *** laser emits approximately 3-ps pulses with an energy of 17.4 p J,which is further boosted to 1.5μJ by using a fiber amplifier.

关键词： erbium fibers fiber lasers fiber optics amplifiers and oscillators mode-locked lasers

Time-division phase modulated single-photon interference in a Sagnac interferometer

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Chinese Science Bulletin 2003年第16期48卷 1704-1708页

作者： WU Guang, ZHOU Chunyuan & zeng heping Key Laboratory of Optical and Magnetic Resonance Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062, China Correspondence should be addressed to zeng heping (e-mail: hpzeng @***) Key Laboratory of Optical and Magnetic Resonance Spectroscopy andDepartment of Physics East China Normal University Shanghai China

We introduce a stable, long-distance single- photon Sagnac interferometer, which has a balanced con-figuration to efficiently compensate phase drift caused by change of the fiber-optic path. By using time-division phase modulation, single-photon interference was realized at 1550 nm in a 5-km-long as well as 27-km-long Sagnac fiber loops, with a fringe visibility higher than 90% and long-term sta-bility. The stable performance of the single-photon interfer-ence indicated that the time-division phase-modulated Sag- nac interferometer might readily lead to practical applica-tions in single-photon routing and quantum cryptography.

关键词：单光子干涉干涉仪基本结构相位补偿时分相位调制稳定性量子密码

富勒烯(C_(60)/C_(70))与三苯基胺间的光诱导电子转移过程研究

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化学学报 2002年第9期60卷 1543-1547页

作者：曾和平华南师范大学化学系广州510631

用激光光解方法研究了富勒烯 (C60 /C70 )与三苯基胺 (TPA)间的光诱导电子转移过程 .在近红外区 ,观测到TPA阳离子自由基 ,富勒烯 (C60 /C70 )激发三线态和阴离子自由基 .在苯腈溶液中 ,利用瞬态谱测定了电子从TPA转移到富勒烯 (C60 /C7... 详细信息

用激光光解方法研究了富勒烯 (C60 /C70 )与三苯基胺 (TPA)间的光诱导电子转移过程 .在近红外区 ,观测到TPA阳离子自由基 ,富勒烯 (C60 /C70 )激发三线态和阴离子自由基 .在苯腈溶液中 ,利用瞬态谱测定了电子从TPA转移到富勒烯 (C60 /C70 )激发三线态的量子转化产率 (Φet)和电子转移常数 (ket) .

关键词：三苯基胺光诱导电子转移富勒烯瞬态谱碳60 碳70 激光光解

Nonclassical Features Interchange Between the Cavity Field and Quantized Trap

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Chinese Physics Letters 1995年第3期12卷 156-159页

作者： zeng heping LIN Fucheng Shanghai Institute of Optics and Fine Mechanics Academia SinicaShanghai 201800

A novel recipe is proposed to generate nonclassical vibrational states of the center-of mass motions of ions in a quantized trap,based on the quantum conversion between the quantum cavity fields and the quantized *** is shown that,when an ion trap system interacts with the eigen mode of a single-mode Fabry-Pérot cavity where the trap was set in,and a particularly selected external laser pulse through Raman transitions,the interchange of the quantum features between the quantum light states and the quantized trap states *** kind of quantum conversion can be used to prepare some nonclassical trap states in an ion trap as well as to measure the properties of initial nonclassical vibrational states.

关键词： states. quantum vibrational

2,5-二甲基噻吩硫氧化物与C_(60)的Diels-Alder反应研究

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化学学报 2000年第4期58卷 464-466页

作者：曾和平华南师范大学化学系广州510631

通过2,5-二甲基噻吩硫单氧化物(亚砜)和2,5-二甲基噻吩硫二氧化物(砜)与C_(60)的Diels-Alder环加成反应,分离获得了稳定加成产物.

关键词： Diels-Alder 富勒烯 C60 噻吩硫氧化物

4,5-四硫富瓦烯-双(2,3,6,7-二苯基-氮杂环庚烷-1-氧化物)的合成

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有机化学 2000年第1期20卷 94-97页

作者：曾和平华南师范大学化学系广州510631

为了发展转变点温度(Tc)高的有机磁性分子,设计合成了4,5-四硫富瓦烯-双(2,3,6,7-二苯基-氮杂环庚烷-1-氧化物)。反应混合物均经硅胶柱和制备HPLC分离和纯化,产物的结构由MS、~1H NMR、^(13)C NMR等确定。

关键词： TTF四芳基化 TTF 合成有机磁性分子

富勒烯(C_(60)/C_(70))与N,N,N′,N′-四-(对甲苯基)-4,4′-二胺1,1′-二苯硒醚(TPDASe)间光诱导电子转移过程的激光光解研究

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有机化学 2003年第5期23卷 447-451页

作者：曾和平华南师范大学化学系广州510631

富勒烯 (C60 /C70 )与N ,N ,N′ ,N′ 四 (对甲苯基 ) 4,4′ 二胺 1,1′ 二苯硒醚 (TPDASe)间在激光光诱导条件下 ,发生了分子间的电子转移过程 .在可见 -近红外区 ( 60 0～ 12 0 0nm) ,观测到了TPDASe阳离子自由基、富勒烯 (C60 /C7... 详细信息

富勒烯 (C60 /C70 )与N ,N ,N′ ,N′ 四 (对甲苯基 ) 4,4′ 二胺 1,1′ 二苯硒醚 (TPDASe)间在激光光诱导条件下 ,发生了分子间的电子转移过程 .在可见 -近红外区 ( 60 0～ 12 0 0nm) ,观测到了TPDASe阳离子自由基、富勒烯 (C60 /C70 )激发三线态和阴离子自由基 ,在苯腈溶液中 ,观测瞬态谱测定了电子从TPDASe转移到富勒烯 (C60 /C70 )激发三线态的量子转化产率(ΦTet)和电子转移常数 (Ket) .

关键词： N,N,N’,N’-四-(对甲苯基)-4,4’-二胺-1,1’-二苯硒醚间光诱导电子转移过程激光光解芳香胺富勒烯

Plasma-grating-induced breakdown spectroscopy

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Advanced Photonics 2020年第6期2卷 9-13页

作者： Mengyun Hu Junsong Peng Sheng Niu heping zeng East China Normal University State Key Laboratory of Precision SpectroscopyShanghaiChina Chongqing Institute of East China Normal University ChongqingChina Jinan Institute of Quantum Technology JinanChina

.Laser-induced breakdown spectroscopy(LIBS)is a useful tool for determination of elements in solids,liquids,and *** nanosecond LIBS(ns-LIBS),the plasma shielding effect limits its reproducibility,repeatability,and signal-to-noise *** femtosecond laser filament induced breakdown spectroscopy(FIBS)has no plasma shielding effects,the power density clamping inside the filaments limits the measurement *** propose and demonstrate plasma-grating-induced breakdown spectroscopy(GIBS).The technique relies on a plasma excitation source-a plasma grating generated by the interference of two noncollinear femtosecond *** demonstrate that GIBS can overcome the limitations of standard techniques such as ns-LIBS and *** intensity enhancement with GIBS is observed to be greater than 3 times that of *** matrix effect is also significantly reduced with GIBS,by virtue of the high power and electron density of the plasma grating,demonstrating great potential for analyzing samples with complex matrix.

关键词： femtosecond filament plasma grating induced breakdown spectroscopy high power and electron density enhancement matrix effect.

Mid-infrared single-photon 3D imaging

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Light(Science & Applications) 2023年第7期12卷 1327-1336页

作者： Jianan Fang Kun Huang E Wu Ming Yan heping zeng State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghaiChina Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqingChina Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxiChina Chongqing Institute for Brain and Intelligence Guangyang Bay LaboratoryChongqingChina Shanghai Research Center for Quantum Sciences ShanghaiChina Jinan Institute of Quantum Technology JinanShandongChina

Active mid-infrared(MIR)imagers capable of retrieving three-dimensional(3D)structure and reflectivity information are highly attractive in a wide range of biomedical and industrial ***,infrared 3D imaging at lowlight levels is still challenging due to the deficiency of sensitive and fast MiR *** we propose and implement a MiR time-of-flight imaging system that operates at single-photon sensitivity and femtosecond timing ***,back-scattered infrared photons from a scene are optically gated by delay-controlled ultrashort pump pulses through nonlinear frequency *** upconverted images with time stamps are then recorded by a silicon camera to facilitate the 3D reconstruction with high lateral and depth ***,an effective numerical denoiser based on spatiotemporal correlation allows us to reveal the object profle and reflectivity under photon-starving conditions with a detected flux below 0.05 photons/pixel/*** presented MIR 3D imager features high detection sensitivity,precise timing resolution,and wide-field operation,which may open new possibilities in life and material sciences.

关键词： reflectivity attractive precise

60 nJ, 95 fs environmentally stable Er-doped fiber laser system

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Chinese Optics Letters 2019年第6期17卷 41-44页

作者： Peng Luo Qiang Hao Hanmei Fu heping zeng Shanghai Key Laboratory of Modern Optical System and Engineering Research Center of Optical Instrument and SystemMinistry of EducationSchool of Optical Electrical and Computer EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200062China

We demonstrate here an environmentally stable and extremely compactable Er-doped fiber laser system capable of delivering sub-100-fs temporal duration and tens of nanojoules at a repetition rate of 10 *** laser source employs a semiconductor saturable absorber mirror mode-locked soliton laser to generate seed pulses.A singlemode-fiber amplifier and a double-cladding-fiber amplifier(both with double-pass configuration)are bridged by a divider and used to manage the dispersion map and boost the soliton *** using 64 replicas,pulses with as high as 60 n J energy within 95 fs duration are obtained at 10 MHz,corresponding to 600 kW peak power.

关键词： environmentally stable Er-doped fiber laser 600 kW peak power