查询词典 laser

This time in Taipei, Li Hui uniquely abandoned his former way of presenting laser works by using concrete objects. Instead he emphasizes on the unique characteristics of laser light itself, such as the reaction between laser lights and smokes created by the fogger, how laser lights disappear in space due to the density of the air and furthermore how the audience reacts to the laser lights.

这次在台北，李晖放弃先前利用实体物品呈现雷射作品的方式，改而强调雷射光束本身独一无二的特性，例如，雷射光束及烟雾的相互作用，雷射光束如何因为空气密度的变化而在空中消失，以及观众对雷射作品有什麼反应。

To study the effect of laser flux on impulse coupling coefficient during the interaction between hydrogen fluoride laser and aluminum at air ambient and in vacuum, respectively, by changing laser spot size on the aluminum target, the relationship between impulse coupling coefficient and laser flux is obtained, which are compared with the interaction between CO2 laser and aluminum.

为了研究激光功率密度对氟化氢激光与铝靶相互作用过程中冲量耦合系数的影响，分别在大气和真空中，用聚焦后的激光烧蚀铝靶，通过改变聚焦到铝靶的光斑大小，得到冲量耦合系数和激光功率密度的关系，并将该实验结果与CO2激光和铝靶相互作用的实验结果进行比较。

Based on the analysis of advantages on laser thermal-stress forming and laser peen forming, a laser pre-stressed compound peen forming of plate is presented, the technology combines heat stack action of continuous laser and shock wave action of pulse laser, so it combines heating effect and mechanics effect.

在对激光热应力成形和激光喷丸成形的技术优势进行分析的基础上，提出了一种板料激光预应力复合喷丸成形技术，其将连续激光的热堆积作用和脉冲激光的冲击波作用相结合，是一种热效应和力效应复合的成形方法。

In the work, the laser-behavior under exposure of Ar〓 laser was discussed. The kinetic process of photochemical reaction, intermediate, sensitive process of diazophthoquinon system were studied by laser fluorescence spectrum and laser induced fluorescence attenuation. The nonlinear relation between photodecomposition rate of the system and laser power and concentration of solution was investigated in detail.

论文也进行了感光组成物感激光性能的研究：利用激光荧光光谱及激光诱导荧光衰减法实现了实时探测邻叠氮萘醌型光敏剂感激光光化学过程、中间体的产生与结构以及增感作用的研究，该方法在国内外文献中未见有报道。

With independent intellectual property right, we provide the customer with manifold series of products: laser stamp engraving machine, laser engraving machine, laser cutting machine, laser marking machine and laser flat bed cutting machine.

公司紧跟市场导向，逐步开发出全系列的中小功率激光印章机、雕刻机、切割机、打标机以及大幅面裁床等。

With independent intellectual property right, we provided the customer with manifold series of products: laser stamp engraving machine, laser engraving machine, laser cutting machine, laser marking machine and laser flat bed cutting machine.

公司紧跟市场导向，逐步开发出全系列的中小功率激光印章机、雕刻机、切割机、打标机以及大幅面裁床等。

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。

A pivotal problem to recognize of the precise position of laser facula has been solved in the process of design work: Firstly the method of background-subtraction is used to eliminate or weaken the affect of background light. Secondly the image threshold segmentation operation and morphologic operation are used to locate the sketchy position of laser facula ; Then the new method of Extracting Edge are designed based on character of laser facula , by using this method in the search area the edges of laser facula can be extracted effectively; At last the optimum picture of laser facular is selected by using the triggering function of hardware and function of software. The exact result can be obtained only by image processing to optimum picture.

在设计过程中解决了精确确定激光斑中心位置这一关键问题：首先利用减背景法，消除或减弱背景光的变化对确定激光光斑中心的影响；再对减完背景后的图片进行阈值分割和二值化处理以确定激光光斑的粗略位置；根据本文激光光斑的特征，设计了一个有效的边界提取算法，对指定区域进行提取激光光斑边界操作，精确的确定激光斑中心位置；最后利用硬件的触发功能和软件编程实现了激光光斑最佳图片的判读，只有对最佳图片进行图像处理得到结果才是准确的。

This paper summariz es recently developments of ultraviolet laser at home and abroad It prognosticates that it will be important for developing all solid state ultraviolet laser in the laser technology area comparing all solid state ultraviolet laser technology with traditional ultraviolet laser technology .

通过与传统紫外激光实现技术的比较，提出全固态紫外激光器是未来紫外激光技术发展的重点的预测。

Main products of Sunic Photoelectricity: Full sets of solar equipment (Laser snicking machine series, laser scribing machine series, module filtering apparatus series, laminated machine series, and cell test apparatus series), YAG laser marking machines series, CO2 laser cutting machine series, CO2 laser engraving machine series etc up to 30 kinds of products. they are widely applied in the fields of solar energy, aero-space and electron, spare parts of automobile, hardware, food and medicine, medical instrument, advertisement and clothes, printing and packing, arts and crafts and so on..

三工光电主要产品：太阳能成套设备（激光刻膜机系列、激光划片机系列、电池分选机系列、组件层压机系列、组件测试仪系列）、激光打标机系列、激光切割机系列、激光雕刻机系列等三十多种产品，广泛应用于太阳能、航空航天、电子元器件、汽车摩托车零配件、五金工具、食品医药、医疗器械、广告服装、印刷包装、工艺品等领域。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。