查询词典 photonics

Beijing-dimensional photonics technology company is a company specialized in infant baby supplies ※ India ※ infant bedding ※ adult handprint ※ nurses ※ foot research and development of enterprises.

我公司是一家专业从事婴儿用品※宝宝印※婴幼儿床上用品※成人手印※脚护士※研制开发的企业。

Richard was then an SERC IT research fellow at Cambridge until taking up a lectureship in physics at the University of Bath in 1990. In 1996 he moved to the University of Bristol as a lecturer in electrical and electronic engineering subsequently being promoted to a readership and finally to be Professor of Photonics. In 2001 he moved to the Cambridge University Engineering Department.

随后任SERC IT剑桥大学研究员，直到1990年担任巴斯大学物理学讲师。1996年他加入布里斯托大学并任电气和电子工程学讲师，随后被晋升为高级讲师、光子学教授。2001年他加入剑桥大学工程学院。

Richard was then an SERC IT research fellow at Cambridge until taking up a lectureship in physics at the University of Bath in 1990. In 1996 he moved to the University of Bristol as a lecturer in electrical and electronic engineering subsequently being promoted to a readership and finally to be Professor of Photonics.

随后任 SERC IT 剑桥大学研究员，直到1990年担任巴斯大学物理学讲师。1996年他加入布里斯托大学并任电气和电子工程学讲师，随后被晋升为高级讲师、光子学教授。2001年他加入剑桥大学工程学院。

The research achievement of this project fill in the research vacancy of high-quality panchromatic gelatin holographic recording material both at home and abroad, and has important significance to the development of holography and information photonics.

本项目的研究成果填补了国内外在高性能全色明胶材料方向的研究空白，对光全息学、信息光子学的发展具有重要意义。

As the standard-bearer of the photonics industry, LASER World of PHOTONICS both in Munich and Shanghai have been renowned as the annual extravaganzas in this field.

作为激光、光学、光电行业的风向标，慕尼黑和上海的LASER品牌展会已成为了该行业的年度盛会。

In this dissertation, InGaAs/InGaAsP/InP MQW microdisk laser and its characterization were presented. Some conclusions are as following: the characteristics of lasing threshold was discussed by using rate equation. The dependent relations between threshold and cavity volume, spontaneous emission coupling efficiency β were investigated. The whispering gallery mode and spontaneous emission in a microdisk geometry were then studied. Almost all spontaneous emission was coupled into the lowest order TE mode when the normalized thickness of photonics well was between 0.15 and 0.5. The design principle and device process of InGaAs/InGaAsP/InP MQW microdisk laser were presented. The microdisk lasers with the diameter of 8μm, 4. 5μm and 2μm were succesfully fabricated by using etching techniques. The pulse lasing thresholds for the microdisk with the diameter of 8μm and 4. 5μm were 170μW and 15μW, a record results compared with the published in the literature. The cw lasing threshold for a 2-μm-diameter microdisk was only a few μW. We haven't found similar report up to now. To solve the problem of directional output in a microdisk laser, the power coupling efficiency in a double disk geometry was investigated with the theory of waveguide mode couple. A new structure of electrically pumped microdisk laser with output waveguide was designed, making a foundation for the practical use of microdisk laser.

本文主要研究InGaAs/InGaAsP/InP多量子阱半导体碟型激光器的研制和特性表征，并取得如下结果：利用速率方程理论讨论了激光器激射阈值的特性，分析了阈值与腔体积和自发发射耦合系数β之间的关系；讨论了微碟光子阱结构中的自发发射特性和微碟中WGM模式特性；光子阱结构在其归一化厚度在0.15-0.5之间时，几乎全部自发发射进入到最低阶TE模式中；研究了InGaAs/InGaAsP/InP多量子阱微碟激光器的结构设计原理和器件的制备工艺；利用刻蚀方法成功制备出直径分别为8μm、4.5μm、2μm的碟型微腔激光器；直径8μm和4.5μm的微碟脉冲光泵浦激射阈值分别为170μW、15μW，是目前所见文献报导中比较低的；直径2μm的微碟连续光泵浦激射阈值仅几μW，目前尚未见到达到类似结果的研究报导；为解决微碟激光器激射光定向引出的问题，通过波导耦合模理论分析了双层碟之间功率耦合效率；据此设计了新型带耦合输出波导的电泵浦微腔激光器，为进一步研制可实用的电泵浦微腔激光器打下基础。

The strain gradient, the fiber Bragg grating's reflection and the short wavelength loss decide the two stopbands. Because of having no extra loss result from coupler and no high cost result from circuitor, the band pass filter formed by single chirped fiber grating have many good characters such as little insert loss its insert loss is the fiber splice loss, small volume, low cost and excellent property, moreover there is no report about fabricating filter by using this method, thus we will apply national invent paten about the method of fabrication fiber band pass filter using single chirped fiber grating. According to the parameters linearly chirped fiber gratings of Canada BRAGG Photonics Inc.

由于没有耦合器带来的3dB的额外损耗，也没有环行器带来的高的制作成本，用单支chirped光纤光栅形成可调光纤带通滤波器具有插入损耗极小（插入损耗为光纤与光纤之间的融接损耗）、体积小、制作成本低廉并且性能优良等特点，而且国内外还未见类似制作方法的报道，我们对用单支chirped光纤光栅形成可调光纤带通滤波器这一制作方法正在申请国家发明专利。

With our complete and detailed organizational planning, responsible young team of highly qualified professionals, including agents have been successfully SIAL CHINA International Food and Beverage Show, National Electronics Show - photonics exhibition, the fifth of biological and chemical and biological equipment professional exhibition industry.

我们凭借完整而周密的组织策划、富有责任感的年轻队伍、高素质的专业人才，已成功代理了包括 SIAL CHINA 国际食品和饮料展、全国电子展--光电子展、第五届生物和生化器材等行业专业展会。

Fundamental potonics and photonics intercrossed with other science enrich the research areas and meanwhile demonstrate its values.

基础光子学、光子学与其它科学的交叉丰富了光子学研究的内容、同时也展现了光子学的价值。

Source Photonics, Inc. is a leading provider of optical communication products used in telecommunication systems and data communication networks.

Source Photonics公司是一家领先的光通信产品供应商，其产品广泛应用于电信系统和数据通讯网络。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新