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只读式超分辨光盘的膜层设计和分析

中国激光 2002年第4期29卷 366-370页

作者：李进延阮昊干福熹中国科学院上海光学精密机械研究所上海201800

超分辨技术是一种无需减小记录波长或增大数值孔径而提高存储密度的方法。Ge Sb Te是一种良好的相变光存储材料 ,在超分辨光盘中可作为掩膜。利用多层膜反射率的矩阵法计算了掩膜为Ge2 Sb2 Te5薄膜的超分辨只读式光盘的光学参数与各膜... 详细信息

超分辨技术是一种无需减小记录波长或增大数值孔径而提高存储密度的方法。Ge Sb Te是一种良好的相变光存储材料 ,在超分辨光盘中可作为掩膜。利用多层膜反射率的矩阵法计算了掩膜为Ge2 Sb2 Te5薄膜的超分辨只读式光盘的光学参数与各膜层厚度之间的关系 ,最后得到了较为理想的膜层厚度匹配。采用磁控溅射法制备了只读式超分辨光盘 ,测量了光盘的光学性质。

关键词：只读式超分辨光盘膜层设计光存储

Algorithm of Reducing the Non-uniformity of Images in LED Display Panel

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Algorithm of Reducing the Non-uniformity of Images in LED Di...

2010 The 3rd International Conference on Power Electronics and Intelligent Transportation System (PEITS 2010)

作者： Feng Chang Changchun institute of optics,Fine mechanics and Physics,chinese academy of sciences Changchun,Jilin Province,china Graduate School of the chinese academy of sciences Beijing,china Rui-guang Wang,xi-feng Zheng and Tie-fu Ding Changchun institute of optics,Fine mechanics and Physics,chinese academy of sciences Changchun,Jilin Province,china

For the purposes of reducing the non-uniformity of images in LED display panel further,propose an ***,analyze the causes of the problem which images in LED display panel have shortcomings of the non-uniformity of ***,introduce the development course of the correction techniques which are used to reduce the non-uniformity of ***,point out the ground that location correction must be carried ***,for the example of a LED display panel which is spliced by modules,construct the algorithm ***,describe the realization steps of the algorithm in accordance with this constructed ***,this algorithm is implemented in a LED display panel,whose resolution is 640×*** results show that this algorithm is able to reduce the non-uniformity of images obviously.

关键词： the non-uniformity of images algorithm location correction LED display panel

大气典型α二羰基化合物的光谱探测方法和外场应用

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光谱学与光谱分析 2024年第8期44卷 2127-2136页

作者：陈浩贾晔徐捷段俊梁帅西苏州科技大学机械工程学院机械电子工程系江苏苏州215009 中国科学院合肥物质科学研究院安徽光学精密机械研究所安徽合肥230031 战略支援部队信息工程大学基础部河南郑州450002

乙二醛和甲基乙二醛是大气环境中两种最典型的α二羰基化合物,其浓度变化是大气VOCs氧化过程和反应活性的重要表征,对于研究大气VOCs氧化反应具有重要意义。大气乙二醛和甲基乙二醛具有浓度极低、寿命短、活性较强,使其浓度的准确探测... 详细信息

乙二醛和甲基乙二醛是大气环境中两种最典型的α二羰基化合物,其浓度变化是大气VOCs氧化过程和反应活性的重要表征,对于研究大气VOCs氧化反应具有重要意义。大气乙二醛和甲基乙二醛具有浓度极低、寿命短、活性较强,使其浓度的准确探测具有一定的挑战性,导致外场环境的监测结果较少,缺乏大气化学反应机理分析的研究。对于α二羰基化合物的探测先后发展出化学衍生化法、质谱法等,能够有效地实现气体浓度监测,而技术也存在一定的局限。随着光学技术的进步,针对大气α二羰基化合物发展了一系列的光谱测量手段,比如差分吸收光谱、腔增强吸收光谱、激光诱导磷光、傅里叶红外光谱等技术,具有非接触、探测限低、灵敏度高、时间分辨率高等特点。综述了乙二醛和甲基乙二醛的光谱测量技术现状和发展趋势,对方法的原理、技术要点、优缺点等进行了详细的说明,列举了技术的器件参数、反演算法、探测限等关键特征,并对其国内外相关应用予以介绍。针对高活性α二羰基化合物的标定需求,详细说明并对比分析了现有条件下常用的气流稀释法、待测物溶液温控起泡器法、加热法、大气反应法等气体标定方法。对基于光谱技术的大气α二羰基化合物外场观测实验进行汇总分析,对实验条件、浓度结果、主要结论等予以总结,表明光谱技术是乙二醛和甲基乙二醛探测的有力手段,列表说明了浓度变化与一次污染排放、VOCs氧化、二次有机气溶胶生成等反应的相关性;重点讨论了甲醛、乙二醛、甲基乙二醛混合比率,得出不同环境下的混合比数值范围,表明RGF在BVOCs环境下数值较低,高混合比可能预示着人工源VOCs的影响。

关键词：光谱技术乙二醛甲基乙二醛挥发性有机物标定

用光学参量啁啾脉冲放大技术产生TW级激光脉冲系统的最优化设计

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物理学报 2001年第9期50卷 1717-1722页

作者：刘红军陈国夫赵卫王屹山赵尚弘中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室西安710068

用数值模拟的方法 ,给出了一种适合以纳秒级的高功率钕玻璃激光系统为抽运源的光学参量啁啾脉冲放大(OPCPA)系统的最优化设计 .该系统主要由一级LBO预放大器和一级LBO主放大器组成 .数值模拟结果表明该系统能够把纳焦级能量的飞秒脉冲... 详细信息

用数值模拟的方法 ,给出了一种适合以纳秒级的高功率钕玻璃激光系统为抽运源的光学参量啁啾脉冲放大(OPCPA)系统的最优化设计 .该系统主要由一级LBO预放大器和一级LBO主放大器组成 .数值模拟结果表明该系统能够把纳焦级能量的飞秒脉冲放大到焦级 ,从而产生几十个太瓦 (10 1 2 W )的脉冲输出 .这一结果为进一步利用OPCPA技术放大飞秒脉冲产生拍瓦 (10 1 5 W)的超短超强激光脉冲输出奠定了基础 ,从而为强场科学研究提供崭新的技术手段 .

关键词：非共线抽运高超宽带增益超短超强激光数值模拟强场激光最优化设计光学参量啁啾脉冲放大 TW级激光脉冲

CRT－LCLV　and　photorefractive　crystl　BSO　based　real－time　joint　transform　correlator

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chinese Journal of Lasers 1994年第5期B3卷 463-468页

作者： FU xiaoli LI Yulin ZHANG Hai WANG Dayong(xian institute of optics & precision beckonics, Academia Sinica,xian 710068, china) xi'an Inst of optics & precision Mechanics Academia Sinica Xi'an China

ＣＲＴ－ＬＣＬＶａｎｄｐｈｏｔｏｒｅｆｒａｃｔｉｖｅｃｒｙｓｔａｌＢＳＯｂａｓｅｄｒｅａｌ－ｔｉｍｅｊｏｉｎｔｔｒａｎｓｆｏｒｍｃｏｒｒｅｌａｔｏｒＦＵＸｉａｏｌｉ；ＬＩＹｕｌｉｎ；ＺＨＡＮＧＨａｉ；ＷＡＮＧＤａｙｏ... 详细信息

ＣＲＴ－ＬＣＬＶａｎｄｐｈｏｔｏｒｅｆｒａｃｔｉｖｅｃｒｙｓｔａｌＢＳＯｂａｓｅｄｒｅａｌ－ｔｉｍｅｊｏｉｎｔｔｒａｎｓｆｏｒｍｃｏｒｒｅｌａｔｏｒＦＵＸｉａｏｌｉ；ＬＩＹｕｌｉｎ；ＺＨＡＮＧＨａｉ；ＷＡＮＧＤａｙｏｎｇ（ＸｉａｎＩｎｓｔｉｔｕｔｅｏ...

关键词： hybrid optical pattern recognition joint transform correlator (JTC) spatial light modulator (SLM) photorefractive crystal

Study of the optical properties of ZnO thin films prepared by laser molecular beam epitaxy

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Study of the optical properties of ZnO thin films prepared b...

2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies

作者： Xu Zhongfeng Ju Kairu Xu Qing’an School of Science xi’an Jiaotong University xi’an 710049 china xi’an institute of optics & precision mechanics xi’an 710068 china

＜正＞ZnO thin films are prepared on sapphire （0001） substrate by laser molecular beam epitaxy （L-MBE） and the optical properties were studied. It is found that the growth conditions and the treat process have obvious effect on the optical properties of ZnO films. With the increase of the growth oxygen pressure, the concentration of the structural defects in ZnO films caused by the disbalance of Zn and O stoichiometric proportion is depressed effectively. As a result, the UV emission intensity grows much higher, but the deep level （DL） emission is depressed. Sample 1#, 2#, and 3# were grown at oxygen pressure 2.0E-3Pa, 8.0E-3Pa, 2.0E-2Pa respectively, and the ratio of the UV emission intensity and the DL emission intensity were 1.00, 2.34, 3.31 respectively. The effect of annealing treatment on the transmission spectra of ZnO films was also studied. Sample 1# was cut into three parts and annealed at 500 ℃, 600 ℃, 700 ℃ respectively in the air atmosphere. The transmittivity in the visible range become much greater after annealing and the higher the annealing temperature is, the higher the transmittivity becomes. When annealed at 700 ℃, the transmittivity has nearly doubled.

关键词： ZnO thin film L-MBE PL oxygen pressure transmission spectrum annealing treatment

High-power double-clad large-mode-area photonic crystal fibre laser

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High-power double-clad large-mode-area photonic crystal fibr...

20th Congress of the International Commission for optics

作者： Kang Li a c * Yishan Wanga Wei Zhaoa Guofu Chena Qinjun Pengb c Dafu Cuib and Zuyan Xub aState Key Laboratory of Transient optics Technology xi’an institute of optics and precision mechanics chinese academy of sciences xi’an 710068 bKey Laboratory of Optical Physics institute of Physics chinese academy of sciences Beijing 100080 cGraduate School chinese academy of sciences Beijing 100039

A high power double-clad ytterbium-doped large-mode-area photonic crystal fibre (LMA PCF) laser was demonstrated using a unique Fabry-Perot (F-P) configuration. A Continuous-wave output power of 50 W

关键词： High Power Fibre Lasers Double-Clad Photonic Crystal Fibres Large-Mode-Area

Experimental Research on Femtosecond Mode-Locked Fiber Lasers with Potential Applications to All-Optical packet Switching Networks

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Experimental Research on Femtosecond Mode-Locked Fiber Laser...

20th Congress of the International Commission for optics

作者： xiaoping xiea b * Jianguo Zhanga Wei Zhaoa Dapeng Dengb Yuanshan Liua and Suixin Zhanga b a State Key Laboratory of Transient optics Technology xi’an institute of optics and precision mechanics of chinese academy of sciences Youyi xi Road No. 234 xi’an china 710000. b xi’an Communication College Chang’an District xi’an china 710000.

We experimentally demonstrate an Er3+-doped femtosecond mode-locked optical fiber laser which operates at the 1550-nm wavelength and generates ultrashort optical pulses with width of 270 fs, repetitio

关键词： Femtosecond optical pulse Er3+-doped fiber Amplifier

利用自适应阈值条纹调制度分析方法进行位相去包裹研究

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中国激光 1998年第1期25卷 81-85页

作者：殷功杰朱传贵刘波薛鸣球中国科学院西安光机所

提出了一种基于条纹调制度分析的位相去包裹新算法。该算法用于三维测量中位相图的去包裹处理，取得了好的实验结果。它同样适用于激光干涉条纹的处理。

关键词：条纹分析位相去包裹图像处理激光技术