脉冲的

The common equation of the evolution of spectrum caused by selfphase modulationis presented, which is the convolution of action spectrum and chirped spectrum caused by selfphase modulation when carrier frequency is single.

给出了由自相位调制引起的频谱演变的普遍表示，即单载频脉冲的SPM引起的啁啾频谱与光源的频谱的卷积，通过数值计算给出从相干脉冲到非相干脉冲的频谱演变规律。

The information of bore-hole inclination measured by the downhole apparatus is transferred to the pulse signal generator , and then sent to the pressure sensor on the stand in a form of pressure pulse and recorded by the electronic recorder finally the drift angle is indicated according to the pulse signal .

其工作原理为：通过精密的测量机构测量井斜，测得的井斜信息由控制机构传递给脉冲信号发生装置，该装置发出的信号通过钻井液以压力脉冲的形式传递给立管上的压力传感器，接收的信号由电子记录仪记录，由记录的脉冲信号读出井斜角。

It is found that due to the interference between the multi-reflected beams inside the etalon,the transmitting pulse is composed of a series of sub-pulses which are separated by the one-way traverse time of the light inside the etalon.

由于光在标准具内多次反射所引起的干涉效应，发现输出的光脉冲包含了一连串的次脉冲，这些次脉冲的时间间隔等于光单次通过标准具的时间。

The transient state shielding efficiency of 3 kinds of plate shielding cabins is over 55dB, and that of full plate shielding cabin is the best. Based on the experimental results and the former related research results, the immunity requirements of high voltage test hall electrical equipment, and research suggestions for equipment, personal and test standards are proposed.

结合冲击放电产生的电磁脉冲的特点，分析了设备损坏的原因，对高电压试验大厅设备的脉冲电磁场抗扰度、脉冲电压抗扰度要求和防护要求进行了讨论，指出了现行标准的不足，提出了对脉冲电磁场生物效应进行研究的建议。

The relation between the center of time gravity of the ultrashort pulse and the carrier phase was studied by using three kinds of pulses,named Gauss,Hyperbolic Secant and Lorentz pulses.The analytical expressions of the relation between them was deduced.

以Gauss、Hyperbolic Secant、Lorentz三种脉冲为例，利用理论推导和数值模拟的方法研究了载波相位对超短脉冲时间重心的影响，并给出了三种脉冲的时间重心与载波相位的解析表达式和数值模拟的图形。

The research work presented in this dissertation focused on developing the scheme and techniques of OPCPA. This dissertation gives the results of the theoretical and experimental investigation on OPCPA scheme. The validation of OPCPA at high energy level was demonstrated successfully. And some important results were achieved. Several key techniques related to developing table-top ultra-intense and ultra-short OPCPA laser system were put forward, for example, the generation of femtosecond seeding pulses, the precisely temporal synchronization of the pump and signal pulses, the pulse stretching and recompression, the OPCPA process with high energy conversion efficiency and etc. Based on the integration of these key techniques, a 1.46-TW/153-fs OPCPA table-top ultra-intense and ultra-high laser system has been developed, which, to the best of our knowledge, has generated laser pulses with the shortest pulse duration and the highest peak power among the joule level OPCPA systems in the world.

本学位论文工作主要是瞄准 OPCPA 这一国际上提出不久并处于初级阶段的新概念，重点开展了 OPCPA 新原理的理论模拟、实验验证，以及基于 OPCPA 新原理的小型化超强超短激光系统的研究与发展，创造性地解决关键科学技术问题，建立并发展相关关键科学技术，如超短脉冲种子源的产生、小型化强激光泵浦源的研制及其脉冲的整形、信号光与泵浦光的精确同步、高效率光学参量放大及高保真脉冲展宽与压缩等关键技术，并在单元技术的总体集成方面取得了重大创新性进展与突破性研究成果，获得了国际上高量级泵浦条件下 OPCPA 激光研究中峰值输出功率最高且脉冲宽度最短的总体领先结果。

For example, in 90 nm devices, although most upper pages in multi-state memory element devices can be programmed within eighteen pulses, the maximum allowed number of pulses may be set at, e.g., twenty-four, to provide a margin of six pulses.

举例来说，在90nm装置中，尽管多状态存储器元件装置中的大多数上部页可在18个脉冲内编程，但最大允许脉冲数目可设定为例如24，以提供6个脉冲的裕限。

The essence of range measurement technique in pulse laser fuzes is to measure the time difference of transmitted pulse and echo pulse.

采用电子计数法实现脉冲激光引信定距的本质是测量发射脉冲和目标反射回波脉冲的时间差。

Finally,the paper puts forward the prospect of laser-triggered surface flashover switch.

最后，指出对窄脉冲电压下的激光沿面闪络开关，激光脉冲与电压脉冲的同步是一个很关键的问题，有待深入研究。

By using Fourier Optics a theoretical model based on single-pass compression is set up for the study of the pulse-front distortion. For the first time the effects of the pulse-front distortion on the spatial-temporal properties of the output pulse from the compressors.

利用傅立叶光学方法，建立了一个基于单程压缩构型的研究脉冲前沿畸变效应的理论模型，首次分析不同种脉冲前沿畸变效应对于压缩器输出脉冲的近场时空特性的影响。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。