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物理学报 1997年第6期46卷 1062-1072页

作者：徐信业王育竹中国科学院上海光学精密机械研究所量子光学(联合)开放研究实验室

通过分析运动三能级原子与驻波激光场的斜交相互作用，设计了两种原子干涉仪．通过对原子波在这两种干涉仪中分裂、偏转和重合等全过程的分析，证明当原子和光场满足一定条件时，原子不同内态间的干涉效应将产生．

关键词：原子干涉仪多普勒型原子光学

Thermally induced dephasing of high power second harmonic generation in MgO:LiNbO_3 waveguides

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Chinese Optics Letters 2011年第12期9卷 65-68页

作者：李国辉徐信业 State Key Laboratory of Precision Spectroscopy and Department of Physics East China Normal University

High power second harmonic generation （SHG） in MgO-doped LiNbO3 waveguides is investigated using a three-dimensional （3D） coupled thermo-optical model. Simulations performed for a 1 lll.6-nm funda- mental laser show the influence of the absorptions and the thermally induced dephasing on the conversion efficieneies of the different waveguides. The onset of the thermally induced dephasing effect for each waveguide is also indicated. As a result of high light intensity in the waveguide, noniinear absorptions are identified as the possible main factors in efficiency losses in specific cases.

关键词： Conversion efficiency Nonlinear optics Three dimensional Waveguides

Development of a frequency-stabilized 555.8-nm laser

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Chinese Optics Letters 2013年第12期11卷 43-46页

作者：周敏黄良玉徐信业 State Key Laboratory of Precision Spectroscopy and Department of Physics East China Normal University

Experiments on developing a frequency-stabilized 555.8-nm laser are presented. The 555.8-nm laser＇ is obtained by frequency doubling of a l lll.6-mn diode laser through single-passing a periodically poled lithium niobate （PPLN） waveguide. Tile 555.8-nm laser is then locked to a stable high-finesse Fabry Perot （FP） cavity by tile Pound Drever--Hall （PDH） technique. Tile finesse of the cavity is measured by tile heterodyne cavity ring-down spectroscopy technique. The linewidth of the 555.8-nm laser is investigated. Alter the laser is locked, the laser line width is reduced to about 3 kHz. This frequency-stabilized 555.8-nm laser is used in experiments on the laser cooling and trapping of ytterbium atoms to develop an ytterbium optical clock.

关键词： Experiments Locks (fasteners) Spectroscopy Ytterbium

运动三能级原子与驻波激光场斜交相互作用的理论分析

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光学学报 1996年第11期16卷 1537-1542页

作者：徐信业王育竹中国科学院上海光学精密机械研究所量子光学(联合)开放研究实验室

分析了一个运动的三能级原子与一个驻波激光场在斜交相互作用时的动量传递行为。结果表明，当原子和光场由于多普勒效应满足一定条件时，将产生受激拉曼跃迁。如果作用光相对于原子而言为一个“π／２脉冲”光时，那么经过作用后，原子... 详细信息

分析了一个运动的三能级原子与一个驻波激光场在斜交相互作用时的动量传递行为。结果表明，当原子和光场由于多普勒效应满足一定条件时，将产生受激拉曼跃迁。如果作用光相对于原子而言为一个“π／２脉冲”光时，那么经过作用后，原子将处于一个相干迭加态，其中一个态与初始态相同；另一个态为新态，并且原子动量增量为两倍单光子反冲动量。把这一机制应用于原子波干涉。

关键词：受激拉曼跃迁相干控加态原子波驻波激光场

Experimental study on injection-locked Ti:sapphire lasers

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Chinese Optics Letters 2011年第12期9卷 59-61页

作者：周庆红姚茂飞周志红徐信业 State Key Laboratory of Precision Spectroscopy and Department of Physics East China Normal University

An injection-locked Ti：sapphire laser is developed, with injection locking achieved using the Pound-Drever- Hall technique. By measuring the dependence of output power on the pump power with various Ti：sapphire laser parameters, we experimentally studied the influences of the ring cavity length, the focal length of the pump-laser mode-matching lens, and the output-coupler transmission on the threshold and slope efficiency. The dependence of the output power on the master laser power is also investigated. The present study provides a guideline for developing a Ti：sapphire laser with high slope efficiency and low threshold.

关键词： Sapphire

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冷镱原子精密光谱的研究进展

物理 2016年第7期45卷 431-440页

作者：周敏徐信业华东师范大学精密光谱科学与技术国家重点实验室上海200062

文章简要介绍了冷原子精密光谱研究方面的重要进展,报道了作者所在课题组近年来在镱原子的激光冷却与囚禁、光晶格中冷镱原子的量子操控、冷镱原子钟跃迁谱的精密测量、冷镱原子光钟的闭环锁定和频率稳定性测量等方面所取得的最新研究结... 详细信息

文章简要介绍了冷原子精密光谱研究方面的重要进展,报道了作者所在课题组近年来在镱原子的激光冷却与囚禁、光晶格中冷镱原子的量子操控、冷镱原子钟跃迁谱的精密测量、冷镱原子光钟的闭环锁定和频率稳定性测量等方面所取得的最新研究结果,最后对光学原子钟的发展进行了展望。

关键词：光学原子钟镱原子量子操控精密测量

Analysis of the blackbody-radiation shift in an ytterbium optical lattice clock

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Chinese Physics B 2016年第10期25卷 119-127页

作者：徐艺琳徐信业 State Key Laboratory of Precision Spectroscopy and Department of Physics East China Normal University

We accurately evaluate the blackbody-radiation shift in a171 Yb optical lattice clock by utilizing temperature measurement and numerical simulation. In this work. three main radiation sources are considered for the blackbody-radiation shift, including the heated atomic oven, the warm vacuum chamber, and the room-temperature vacuum windows. The temperatures on the outer surface of the vacuum chamber are measured during the clock operation period by utilizing seven calibrated temperature sensors. Then we infer the temperature distribution inside the vacuum chamber by numerical simulation according to the measured temperatures. Furthermore, we simulate the temperature variation around the cold atoms while the environmental temperature is fluctuating. Finally, we obtain that the total blackbody-radiation shift is -1.289（7）Hz with an uncertainty of 1.25×10;for our;Yb optical lattice clock. The presented method is quite suitable for accurately evaluating the blackbody-radiation shift of the optical lattice clock in the case of lacking the sensors inside the vacuum chamber.

关键词： optical lattices blackbody radiation shift temperature measurement finite element analysis

冷镱原子光钟绝对频率测量及相关跃迁研究的进展

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仪器仪表学报 2024年第2期45卷 2-16页

作者：齐启超金涛韫彭成权孙常越徐信业华东师范大学精密光谱科学与技术国家重点实验室上海200241

光学原子钟的稳定度和不确定度都已全面进入小数10-18量级,是目前最精密的时间频率测量工具之一。光学原子钟已在精密测量和基础物理研究等尖端科研领域展现出潜力,并有望重新定义时间单位“秒”。镱原子光钟因其独特的能级优势而成为... 详细信息

光学原子钟的稳定度和不确定度都已全面进入小数10-18量级,是目前最精密的时间频率测量工具之一。光学原子钟已在精密测量和基础物理研究等尖端科研领域展现出潜力,并有望重新定义时间单位“秒”。镱原子光钟因其独特的能级优势而成为了目前世界上发展最成熟、研究最广泛的光钟之一。镱原子钟跃迁的绝对频率测量和镱原子相关跃迁光谱的精密测量具有重要意义。综述了冷镱原子光钟的钟跃迁6s 21 S 0-6s6p 3P 0能级绝对频率测量的国内外进展,并介绍以7.3×10^(-16)的不确定度测量镱原子钟跃迁绝对频率的实验,测量值为518295836590863.30±0.38 Hz。综述了利用已完成绝对频率测量的镱原子光钟为基准,对镱原子的649,770和1389 nm抽运光的对应跃迁绝对频率进行精密测量的结果。

关键词：镱原子光学原子钟绝对频率测量精密光谱精密测量

A novel method to measure the isotope shifts and hyperfine splittings of all ytterbium isotopes for a 399-nm transition

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Chinese Physics B 2010年第12期19卷 174-180页

作者：王文丽徐信业 State Key Laboratory of Precision Spectroscopy and Department of Physics East China Normal University

We report the experimental results on measuring the isotope shifts and hyperfine splittings of all ytterbium isotopes for a 399-nm transition by using a quite simple and novel method. It benefits from the advantages of the modulation transfer spectroscopy in an ytterbium hollow cathode lamp and the Doppler-free spectroscopy in a collimated ytterbium atomic beam. The key technique in this experiment is simultaneously measuring the frequency separations of the two spectra twice, and the separation difference between two measurements is solely determined by the well-defined frequency of an acousto-optics modulator. Compared with the most of previously reported experimental results, ours are more accurate and completed, which will provide the useful information for developing a more accurate theoretical model to describe the interaction inside an ytterbium atom.

关键词： isotope shift hyperfine splitting modulation transfer spectroscopy ytterbium

Development of adjustable permanent magnet Zeeman slowers for optical lattice clocks

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Chinese Physics B 2017年第5期26卷 102-107页

作者：张晓航徐信业 State Key Laboratory of Precision Spectroscopy and Department of Physics East China Normal University Shanghai 200062 China

We develop a permanent-magnet Zeeman slower with adjustable magnets along the longitudinal and radial *** by four arrays of cylindrical magnets, the longitudinal magnetic field in the slower is tunable if relevant parameters vary, for example, laser detuning or intensity. The proposed Zeeman slower can be reconfigured for Sr atoms. Additionally,we demonstrate that the residual magnetic field produced by the permanent magnets in the magneto-optical trap region can be as small as 0.5 Gs.

关键词： permanent magnet slower adjustable longitudinal dipole tunable clock directions captured