激光材料

And the mechanisms of laser ignition have been discussed. The distribution law of laser in energetic materials has been shown.

主要内容如下：(1)分析了激光作为理想点火源的特性，给出了激光点火的作用机理和激光能量在含能材料内部的分布规律。

The two-dimensional physical model that chemical oxygen-iodine laser irradiates a disk target of InSb is established.

在激光对抗中，探测器容易受到激光损伤，为此研究了连续强激光对半导体材料的损伤机理，建立了氧碘化学激光器辐照InSb圆板型靶材的二维物理模型。

The reflectivity of ligneous material's surface to CO2 laser is substantiated by experiment, then the mathematics model of the reflectivity is set up according to the basic principle of optics.

通过试验证实了木质材料表面对CO2激光反射的存在，根据基本光学理论建立木质材料表面对CO2激光的反射率数学模型。

There are many factors that can affect the radiation, such as photoconductor material characters, bias voltage, laser pulse width and energy, and so on.

影响光电导天线的因素有材料性质、偏转电压、激光脉冲宽度和单脉冲能量等，其中激光脉冲宽度和激光脉冲能量对太赫兹辐射有很重要的影响。

Compared with picosecond pulse laser, the intense of pulse is the main factor of the finally temperature of electron.

发现电子与晶格耦合系数影响材料表面电子的温升及电子与晶格温度耦合时间；与皮秒激光比较，脉冲功率密度是影响电子最终温度的主要因素；飞秒激光烧蚀金属材料的厚度可达到表层厚度量级。

The residual stress in the thickness after one LP and multi-LP and the distribution of residual stress after single pill and multi-pills shot the sheet metal are analyzed.

数值模拟分析了激光单点喷丸板料后，材料厚度方向的残余应力分布，以及激光多点。多排喷丸板料后材料厚度方向的残余应力分布。

The result showed that the photoconductive material of binary blended composite was not found to be used in laser beam printers. The expert group, organized by Science Committee of Zhejiang Province, considered that the achievement was based on our own technology, and was the achievement with new ideas and high technology which reached the international level. 2. In order to broaden the spectrum response range for photoconductors, we blended TiOPc with monoazo pigment (AZO-1), double azo pigments (AZO-2, AZO-3 and AZO-4) based on benzidine as bridge group, double azo pigments (AZO-5, AZO-6, and AZO-7) based on 2, 7-diamino-fluorenone as bridge group respectively.

首次采用这种共混复合物作为光生载流子材料，在自制的环式浸涂装置中制备激光打印光电导鼓，国家法定测试单位-机械工业部天津复印技术研究所的测试其光敏性：E〓=1.2～1.3μJ／cm〓，法定检索单位上海情报所的手工、光盘和计算机国际联机检索结果为：二元共混复合光电导材料应用于激光打印机未见报导，浙江省科委组织的专家鉴定小组认为：此项成果立足于自己的技术，是一项具有创新性的高技术成果，达到了国际先进水平。

The two-photon absorption cross-sections of these styryl derivatives were determined by Z-scan technique, and the benzothiazolium derivatives exhibited the largest TPA cross-sections (10〓s·cm〓/photon) and the best power limiting ability at high operable incident intensity. The results show that the benzothiazolium derivatives are promising organic compounds as two-photon absorption optical limiting materials. 2. Several organic dyes active to 800nm femtosecond laser with D-π-A structure were designed and synthesized.

研究了它们的上转换荧光、上转换激射和光限幅行为，通过改变染料分子共轭体系的大小，首次实现了在576nm-635nm范围内的双光子上转换激光波长的调节，其中噻唑啉碘盐类二苯乙烯化合物的双光子上转换激射峰（576nm）是迄今在1064nm皮秒激光作用下能够得到的最短波长的激光；阴离子显著改变上转换激射效率，但对上转换荧光峰和激射峰的位置影响很小；增加溶液的浓度，上转换荧光光谱和激射光谱红移，并在一定的浓度范围内，能够有效的提高上转换激射效率；利用Z-扫描技术测定了染料分子的双光子吸收截面，发现苯并噻唑类染料分子的双光子吸收截面高达10〓s·cm〓／photon，而且在较大的入射光强范围内，这类染料分子具有较大的光限幅能力，是一类作为双光子吸收光限幅材料很有潜力的染料分子。

In order to acquire the heating-cooling process of laser molten pool and the mutual effect of sintering layers in multi-layer powder sintering, factors such as heat conduction, heat radiation, heat convecting and changeable thermophysical property parameters were taken into account comprehensively, the 3D transient state FEM of the temperature field of multi-layer thin-wall metal parts formed by DMLS was established based on ANSYS. The APDL (ANSYS Parametric Design Language) was used to carry out thermal resource moving and the technique of birth/death for element was used to simulate the process of material addition.

为掌握多层粉末烧结过程中激光熔池的加热冷却规律以及各烧结层之间的相互影响，综合考虑热传导、热辐射和热对流以及材料的高度非线性，基于ANSYS平台建立了多层金属薄壁件的三维温度场有限元模型，利用APDIJ语言编程实现模拟中激光热源的移动，采用&单元生死&技术描述粉末材料动态增长过程。

The service lifetime of the repaired skirt slab was 2 to 3 times of the new one imported. laser cladding ; bar mill ; skirt slab

激光的引入，使得材料工作者可以根据应用背景来进行更广泛意义上的材料设计，激光表面处理技

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。