有机稀土Eu（DBM）3bath配合物电致发光

有机稀土Ｅｕ（ＤＢＭ）３ｂａｔｈ配合物电致发光＊梁春军李文连＊＊洪自若彭俊彪ａ）虞家琪ａ）赵丹赵东旭（中国科学院长春物理研究所，长春１３００２１）ａ）（中国科学院激发态物理开放研究实验室，长春１３００２１）关键词有机电致发光，稀土配合物，窄带发射近几...     

掺杂Cu^2的ZnS纳米超微粒的荧光衰减

掺杂Ｃｕ２＋的ＺｎＳ纳米超微粒的荧光衰减＊李丹刘俊业孟继武窦凯ａ）许武ａ）孙聆东ｂ）李振鹏ｂ）（中国科学院长春物理研究所，长春１３００２１）ａ）（中国科学院激发态物理开放研究实验室，长春１３００２１）ｂ）（北京大学稀土材料化学及应用国家重点实验室，北...     

集成光学亚微米光栅的原子力显微镜表征

集成光学亚微米光栅的原子力显微镜表征＊李燕徐迈（中国科学院激发态物理开放研究实验室，长春１３００２１）（中国科学院长春物理研究所，长春１３００２１）张玉书（集成光电子学国家重点联合实验室，长春１３００２３）ＢｕｒｇｅｒＪＰａｒｉａｕｘＯ（ＣＳＥＭＳｗ...     

藻蓝蛋白(C-Pc)的三阶光学非线性和激发态弛豫

藻蓝蛋白（Ｃ－Ｐｃ）的三阶光学非线性和激发态弛豫＊刘志斌彭俊彪ａ）李文连（中国科学院长春物理研究所，长春１３００２１）ａ）（中国科学院激发态物理开放研究实验室，长春１３００２１）邓湘君（吉林省生物研究所，长春１３００１２）关键词藻蓝蛋白，χ（３）值，...     

取向Kerr效应对液晶光控取向质量的影响

取向Ｋｅｒｒ效应对液晶光控取向质量的影响＊王淑梅ａ）梁兆颜闫石谢景力ｂ）田颜清ｂ）黄锡民ａ）（中国科学院激发态物理开放研究实验室，长春１３００２１）（中国科学院长春物理研究所，长春１３００２１）ｂ）（吉林大学化学系，长春１３００２３）关键词取向Ｋｅｒ...     

氟化铟基玻璃中Er^3＋离子光谱性质的研究

测定了掺Ｅｒ＾３＋氟化铟基玻璃的吸收光谱，激发光谱和荧光光谱，计算了该玻璃的强度参数Ω（ｔ＝２，４，６），给出了Ｅｒ＾３＋离子的发光特性的计算结果，并与掺Ｅｒ＾３＋的氟锆酸盐玻璃做比较，解释了基质玻璃对Ｅｒ＾３＋离子发光特性的影响。     

Cd_3Al_2Si_3O_(12)玻璃中的Er~(3+)的光学跃迁

徐 迈　中国科学院长春光学精密机械与物理研究所,吉林长春１３００２１摘要：根据Ｊｕｄｄ－Ｏｆｅｌｔ理论,利用镉铝硅酸盐玻璃中Ｅｒ３＋的吸收光谱,计算了实验与理论振子强度,用最小二乘法拟合实验与理论振子强度得到了三个Ｊ－Ｏ强度参数ａ２,ｏ４,ａ６。并由此计算了ＥＪ”在不同能级之间的自发辐射系数Ａ、辐射寿命ｒ、荧光分支比β以及积分发射截面Σ。根据这些参数分析认为掺饵镉铝硅酸盐玻璃可能实现近红外激光输出。     

Tb~（3＋）－有机配合物作为发射层的有机薄膜电致发光

Ｔｂ~（３＋）－有机配合物作为发射层的有机薄膜电致发光孙刚，赵宇，于沂，李文连，钟国柱，虞家琪（中国科学院长春物理研究所，长春１３００２１）１引言有机薄膜电致发光（ＯＥＬ）自从Ｔａｎｇ［１，２］发表了高效、高亮度双层结构器件以来，因其驱动电压低，可制?..     

光助MOCVD生长ZnSe单晶薄膜

光助ＭＯＣＶＤ生长ＺｎＳｅ单晶薄膜＊赵晓薇范希武张吉英杨宝均于广友申德振（中国科学院长春物理研究所，长春１３００２１）（中国科学院激发态物理开放研究实验室，长春１３００２１）关键词光助ＭＯＣＶＤ，ＺｎＳｅ基半导体材料，辐照光强度蓝绿光发射二极管和激光...     

制备波导光栅的相位掩膜技术

制备波导光栅的相位掩膜技术＊马少杰李燕徐迈林久令（中国科学院长春物理研究所，长春１３００２１）（中国科学院激发态物理开放研究实验室，长春１３００２１）关键词光波导，光栅耦合器，全息光栅自从７０年Ｄａｋｓｓ等人首次报道了集成光波导光栅器件以来［１］，波...     

Guided-Wave Two-Dimensional Acousto-Optic Scanner Using Proton-Exchanged Lithium Niobate Waveguide

Two-dimensional scanning of a 0.6328 mum guided-light beam has been realized using noncolinear acousto-optic (AO) coplanar Bragg diffraction together with colinear AO guided-mode to substrate radiation-mode conversion in a Z-cut Xpropagation LiNbO3 proton-exchanged (PE) waveguide. The two surface acoustic (SAW) waves utilized are at the center frequencies of 500 and 200 MHz, propagating in the Y and X axes, respectively. Two-dimensional scanning of approximately 720 resolvable light beam spots, namely, 18 40 (horizontal vertical) scanning, has been demonstrated using a light beam of 1.0 mm aperture. The total number of resolvable beam spots can be greatly increased from 720 by simply utilizing SAW transducers of larger bandwidth and a light beam of greater aperture. It should also be possible to significantly increase the diffraction efficiency from 3 % by optimizing the parameters of the PE waveguide and the SAWs.     

Hybrid Wavelength and Code Division Multiple Access in Optical Networks

A review of schemes for multiple access in fiber optic networks shows that a hybrid of wavelength and code division multiple access (WCDMA) combines the best features of both. In particular, the hybrid scheme retains the large information carrying capacity of wavelength division multiple access (WDMA) and flexibility of code division multiple access (CDMA). In this paper WDMA, optical CDMA (OCDMA), and WCDMA networks are discussed. In OCDMA networks, concept of incoherent and coherent coding including inverse decoding and matched filter is introduced. The delay performance of both WDMA and WCDMA networks, under the simple suboptimum access protocols based on cyclic search, is computed. It has been shown quantitatively that tuning delay significantly affects the delay performance of both WDMA and WCDMA networks. Futhermore, delay performance of WCDMA networks is always better than the WDMA networks for the same tuning delay, load, and number of users.     

Effect ofγ-radiation on the spectral luminescence characteristics of impure cadmium tungstate crystals

Results of a study of the effect of γ-radiation on the spectral luminescence properties of cadmium tungstate crystals doped with silver, bismuth, and molybdenum cations are presented. Spectral characteristics of the nondnnnoped crystals are briefly described. Absorption and photo and X-ray luminescence spectra of the crystals taken before and after exposure to γ-radiation (5.5·10⁴ Gy) are compared. It is found that the spectral characteristics of the crystals doped with silver, bismuth, and molybdenum cations do not change markedly after the exposure. The relation between the type of impurity-induced defects, individual characteristics of the impurity cations, and the character of the effect of γ-radiation on the spectral luminescence properties of impure crystals is analyzed (preliminarily). Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 1, pp. 55–60, January–February, 1997.     

Femtosecond Transform-Limited Pulse Generation by Compensating for the Linear Chirp of SPM Spectra in Dispersion Shifted Fibers

A simple technique of pulse compression, based on the linear chirp compensation of self-phase modulation (SPM) spectra in dispersion shifted fibers, is demonstrated. The optimization procedure is carried out, for a short span of a single-mode fiber, using a parabolic law, which describes the behavior of the squared output pulse width versus the pump peak power in the case of Gaussian pulses. The experimental results give a minimum pulse duration of 233 fs, which is in good agreement with the model. Shorter and coherent pulses, down to 90 fs, have been obtained by inserting an interference filter at the optical output.     

Sorting of bending magnets for the SSRF booster

The Shanghai Synchrotron Radiation Facility(SSRF)booster ring,a full energy injector for the storage ring,is deigned to accelerate the electron beam energy from 150MeV to 3.5GeV that demands high extraction efficiency at the extraction energy with low beam loss rate when electrons are ramping.Closed orbit distortion(COD)caused by bending magnet field uniformity errors which affects the machine performance harmfully could be effectively reduced by bending magnet location sorting.Considering the affections of random errors in measurement,both ideal sorting and realistic sorting are studied based on measured bending magnet field uniformity errors and one reasonable combination of bending magnets which can reduce the horizontal COD by a factor of 5is given as the final installation sequence of the booster bending magnets in this paper.     

Measurement of nonlinear coefficient of optical fiber based on small chirped soliton transmission

We measure the waveform and phase curves of short optical pulses before and after transmission over different lengths of fibers by use of the pulse analyzer with the frequency-resolved optical gating (FROG),and numerically simulate pulse evolution under the experimental conditions.The nonlinear coefficient of the fiber is given by comparing the experimental results with the numerical ones.Difference between the experiment and numerical simulation is analyzed.     

Resonance scattering of canonical elastic shells in absorbing fluid medium

Resonance scattering of elastic spherical shell and cylindrical shell while the surrounding fluid medium has absorption is studied. The normal mode solution derived using exact elastic theory and the separation of variables is still applicable. However, the scattering form function has to be modified for the absorbing medium, otherwise the unreasonable result would be obtained. The backscattering form function in the absorbing medium is redefined, and the form function of elastic spherical and cylindrical shell with vacuum or solid matter filled is calculated in various absorption conditions. The results show that the absorption of surrounding fluid leads to notable attenuation of the coincidence resonances in the mid-frequency, but it has a little influence on the low-frequency resonance scattering induced by the filler inside the shell.     

Single-beam self-referenced phase-sensitive surface plasmon resonance sensor with high detection resolution

A versatile and low-cost single-beam self-referenced phase-sensitive surface plasmon resonance(SPR)sensing system with ultra-high resolution performance is presented.The system exhibits a root-mean-square phase fluctuation of ±0.0028.over a period of 45 min.i.e.a resolution of±5.2×10-9 refractive index units.The enhanced performance has been achieved through the incorporation of three design elements:a true single-beam configuration enabling complete self-referencing so that only the phase change associated with SPR gets detected,a differential measurement scheme to eliminate spurious signals not related to the sensor response,and the elimination of retardation drifts by incorporating temperature stabilization in the liquid crystal phase modulato .Our design should bring the detection sensitivity of non-labeling SPR biosensing closer to that achievable by conventional fluorescence-based techniques.     

Influences of SiO2 protective layers and annealing on the laser-induced damage threshold of Ta2O5 films

Ta2O5 films are prepared on BK7 substrates with conventional electron beam evaporation deposition.The effects of SiO2 protective layers and annealing on the laser-induced damage threshold (LIDT) of the films are investigated.The results show that SiO2 protective layers exert little influence on the electric field intensity(EFI)distribution,microstructure and microdefect density but increase the absorption slightly.Annealing iS effective on decreasing the microdefect density and the absorption of the films.Both SiO2 protective layers and annealing are beneficial to the damage resistance of the films and the latter is more effective to improve the LIDT.Moreover,the maximal LIDT of Ta2O5 films is achieved by the combination of SiO2 protective layers and annealing.