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用SPIDER法测量飞秒激光脉冲的光谱相位

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物理学报 2004年第9期53卷 3004-3009页

作者：王鹏王兆华魏志义郑加安孙敬华张杰中国科学院物理研究所光物理重点实验室北京100080

介绍了用SPIDER测量光谱相位的实验装置和模拟计算飞秒激光特性参数的原理 ;提出了Ω和τ等重要参数的确定方法 .实验上用自建的SPIDER进行了掺钛蓝宝石飞秒振荡器输出脉冲的相位测量 ,并以此为基础还原出了原输入脉冲的时域形式 ,模合... 详细信息

介绍了用SPIDER测量光谱相位的实验装置和模拟计算飞秒激光特性参数的原理 ;提出了Ω和τ等重要参数的确定方法 .实验上用自建的SPIDER进行了掺钛蓝宝石飞秒振荡器输出脉冲的相位测量 ,并以此为基础还原出了原输入脉冲的时域形式 ,模合计算所得的脉宽为 1 0 7fs。

关键词： SPIDER法飞秒激光光谱相干光谱相位脉冲宽度

Monolithic CEO-stabilization scheme-based frequency comb from an octave-spanning laser

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chinese physics B 2016年第4期25卷 150-153页

作者：于子蛟韩海年谢阳滕浩王兆华魏志义 beijing National laboratory for Condensed Matter physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of physics and Optoelectronics Engineering Xidian UniversityXi'an 710071China

We demonstrate a carder-envelope phase-stabilized octave-spanning oscillator based on the monolithic scheme. A wide output spectrum extending from 480 nm to 1050 nm was generated directly from an all-chirped mirror Ti：sapphire laser. After several improvements, the carder-envelope offset （CEO） beat frequency accessed nearly 60 dB under a reso- lution of 100 kHz. Using a feedback system with 50-kHz bandwidth, we compressed the residual phase noise to 55 mrad （integrated from 1 Hz to 1 MHz） for the stabilized CEO, corresponding to 23-as timing jitter at the central wavelength of 790 nm. This is, to the best of our knowledge, the smallest timing jitter achieved among the existing octave-spanning laser based frequency combs.

关键词： octave-spanning laser optical frequency comb carrier-envelope offset low phase noise

Construction and Physical Properties of a Single Molecular Device

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Construction and Physical Properties of a Single Molecular D...

Solving the input data in error correc-tion of optical fabrication by finite Fourier coefficient algorithm

中国化学会第26届学术年会纳米化学分会场

作者： Hongjun Gao beijing National laboratory of Condensed Matter physics & institute of physics, chinese academy of Sciences, PO Box 603, beijing 100190, china

＜正＞Constructing single molecular devices of functionalities has stimulated a great interest in the past decades. One of the challenges in this field is to make the single molecule stably connected to a single metal atom on metal surfaces, and further to make the molecule create electric energy and optical/electro radiation by rotating the molecule.

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Science china(Technological Sciences) 2006年第1期49卷 50-60页

作者： CHENG Haobo1,2, SUN Guozheng3 & FENG Zhijing2 1. Department of optical Engineering, beijing institute of Technology, beijing 100081, china 2. Department of Precision Instruments and Mechanology, Tsinghua University, beijing 100084, china 3. china North Industries Group Corporation, beijing 100089, china 1. Department of optical Engineering Beijing Institute of Technology Beijing 100081 China 2. Department of Precision Instruments and Mechanology Tsinghua University Beijing 100084 China 3. china North Industries Group Corporation Beijing 100089 China

A free-form lens (FFL) is a special surface that is difficult to be fabricated. FFL are usually fabricated by computer-controlled optical surfacing (CCOS) technique. During CCOS, the material removal amount is determined by the unit removal function (URF) convoluting with the input data――the dwell time. When the removal amount and the URF are known, how to solve the input data involves the special algorithm――deconvolution. Usually, the input data are solved by virtue of low pass filter or iterative methods. However, an approximation solution would destroy the machining stability nec-essary to perform precisely CCOS. In this paper, to solve the input data, a new method that is based on the finite Fourier coefficient is put forward. It can give a continuous and accurate solution for fabricating choice. Several parameters are simulated, which influ-ence the process of CCOS, and evaluating on the effect of the method is also carried out. Experimental results verify that this method is suitable for guiding the manufacturing of high precision FFL.

关键词： optical fabrication, computer controlled optical surfacing, free-form lens, finite Fourier coefficient, error correction.

The mathematical equivalence property of photonic bandgaps in photonic crystals and electronic bandgaps in electronic crystals for 1D and 2D systems

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The mathematical equivalence property of photonic bandgaps i...

A New Wavelength Selective Photoreceiver

CCAST“光子晶体”研讨会

作者： Zhengbiao Ouyang and Jingzhen LiSolid State Photonics laboratory, College of Scientific Researches and Developments, Shenzhen University, Shenzhen 518060, chinaDaozhong Zhang optical physics laboratory, institute of physics, chinese academy of Sciences, beijing 100080, china

＜正＞Starting from the Schr（?）dinger equation of electron waves and the Maxell‘s waveequation of photons,we find that the wave equation of electrons in electronic crystalsand that of s-polarized photons in photonic crystals in 1D and 2D systems haveexactly the same *** mathematical equivalence property of photonic bandgapsand electronic handgaps in 1D and 2D systems for s-polarized photons exists both for

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chinese Journal of Lasers 2000年第5期9卷 51-55页

作者： LIU Kai HUANG Yongqing REN Xiaomin LI Jianxin GUO Wei (optical Communication Center, beijing University of Posts and Telecommunications, beijing 100876, china)MA Xiaoyu KANG Xuejun LIAO Qiwei (institute of Semiconductor, The chinese academy of 北京邮电大学北京中科院半导体所北京

A new kind of wavelength selective photoreceiver is proposed. It was constructed by a Fabry Perot (F P) etalon filter and a resonant cavity enhanced (RCE) photodetector. The photoreceiver′s spectral response is determined by the F P etalon filter with a FWHM of less than 4 nm. Moreover, with such a photoreceiver, the transmission loss of the F P etalon filter can be compensated to some extent. And this will benefit its applications.

关键词： wavelength selection photodetector WDM and optoelectronics device

An Integrated PDMS Electrophoresis Microchip with LED Induced Fluorescence Detection

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稀有金属材料与工程 2006年第S3期 315-318页

作者： Changchun Liu Dafu Cui Haoyuan Cai Bo Su Xing Chen Haining Wang and Zhaoxin Geng (State Key laboratory of Transducer Technology,institute of Electronics,chinese academy of Sciences,beijing 100080,china)

A PDMS electrophoresis microchip,which integrated with optical fiber for fluorescence detection,was fabricated by using silicon master.A deep reactive ion etches (DRIE) technology was used to fabricate the silicon master with positive *** PDMS replica was fabricated by casting PDMS prepolymer against the silicon master,where an optical fiber was first fixed on the end of separation *** improve the rigid characteristics of integrated PDMS microchip,the chips were subsequently assembled by reversible sealing against glass plate.A blue light emitting diode (LED) was used as excitation light sources for inducing fluorescence detection through coupling LED light into the optical *** an application, integrated PDMS microchip was tested in the capillary electrophoresis separation of DNA *** results showed that DNA markers could be effectively separated and detected except for the segments of 271 and 281.

关键词： microfluidic chip optical fiber DNA separation LED detection

CHIRAL CONJUGATED OLIGOMER BASED ON 1,1’-BINOL WITH 3,3’-ACETYLENE-PHENYLENE-ACETYLENE SPACER

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chinese Journal of Polymer Science 2001年第5期19卷 521-526页

作者： Tian-jun Liu Ke-shen Zhang Yong-jun Chen Dong Wang Chao-jun Li Center for Molecular Science, institute of Chemistry chinese academy of Sciences, beijing 100080 china Department of Chemistry Tulane University New Orleans, LA 70118 U.S.A. chinese Acad Sci Inst Chem Ctr Mol Sci Beijing 100080 Peoples R China Tulane Univ Dept Chem New Orleans LA 70118 USA

The 1,2'-binaphthol based oligomers 3 and 7 with 3,3'-acetylene-phenylene-acetylene spacer were prepared from BINOL 1. The high optical rotation value and CD spectra demonstrated the main chain chirality of the oligomer molecule. The UV-VIS and fluorescent spectra evidence the characteristics of conjugated structure. In comparison with oligomer 2 bearing 3,3'-acetylene spacer, the oligomers 3 and 7 have longer efficient conjugation segment, and their fluorescent quantum yields (phi) increased (0.60-0.65 versus 0.14.. Extending the effective conjugation segment would improve the photophysical properties of chiral conjugated polymers.

关键词： chiral conjugated oligomer BINOL 3,3 '-acetylene-phenylene-acetylene spacer

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激光等离子体推进技术的研究进展

物理 2003年第8期32卷 533-538页

作者：郑志远鲁欣张杰中国科学院物理研究所中国科学院光物理重点实验室北京100080

传统的采用化学燃料来驱动火箭升空的技术由于昂贵的发射费用、低的载荷比、复杂的发射操作运转模式、重复使用困难等缺点而一直困扰着人们对太空的进一步探索 .但随着激光技术与航天技术的飞速发展 ,激光作为一种先进推进技术逐步呈现... 详细信息

传统的采用化学燃料来驱动火箭升空的技术由于昂贵的发射费用、低的载荷比、复杂的发射操作运转模式、重复使用困难等缺点而一直困扰着人们对太空的进一步探索 .但随着激光技术与航天技术的飞速发展 ,激光作为一种先进推进技术逐步呈现出其他推进技术不可比拟的优势和发展前景 .文章对激光等离子体推进技术的工作原理和研究现状做了介绍 ,并对激光等离子体在驱动微型飞行器方面目前存在的技术问题和研究热点进行了简述 .

关键词：火箭发动机激光等离子体推进技术工作原理微型飞行器激光驱动