高功率

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。

The numerical results show that outer scale of turbulence has great effect on G-tilt power spectrum and residual variance of tilted tracking at low frequency but almost has no effect on the high frequency.

数值计算结果表明大气湍流外尺度对G倾斜功率谱以及倾斜跟踪残余误差的低频段影响较大，而对高频段的影响可以忽略不计。

The high efficiency and high power semiconductor laser with multi-active regions which are cascaded by reverse biased tunnel junction has a higher inner quantum efficiency which can larger than 1, so that it can output higher optical power at the same injected current compared with the normal lasers, meanwhile, it can be designed to large coupled optical cavity, so it will increase the limit of the electro-thermal destroy and the COD.

通过反向偏置隧道结将多个有源区级联起来的多有源区耦合大光腔高效大功率半导体激光器从理论上解决了传统激光器存在的问题，由于其内量子效率大于1，可以在相同电流下输出高的光功率，且可以制成耦合大光腔结构，增大了光腔面积，因此相对于传统激光器而言，其电热烧毁和COD水平都会提高。

LED safety lamp power telephone: telephone line desk lamp to use is that we ordinary telephone lines, voltage-driven LED light-emitting highlight, we also know that phone lines generally only 50V, the total power of only 0.3 watts, which means the lamp less electricity than the telephone, at the same time the use of 10,000 telephone lines per hour lamp consumes only 3 degrees.

LED电话台灯的安全省电：电话线台灯使用的是我们普通的电话线，电压驱动高亮LED发光，我们也知道电话线一般只有50V，总功率只有0.3瓦，也就是说该台灯的用电量比电话机还少，同时使用10000只电话线台灯每小时仅耗电3度。

Moreover, during the radar signal generation, static and dynamic characters of backscattering coefficient are set up, and time sampling of each clutter unit is computed with voltage character and power spectrum character, and the sampling signals are added in every distance gate to output time series. In addition, noise is modeled with a function of Gaussian stochastic process.

在雷达信号模拟中，建立了杂波后向散射系数的静态和动态特性，从杂波的幅度统计特性与功率谱特性入手，计算了每个杂波单元的时域采样，按照对应的距离门叠加各个距离模糊间隔上的回波信号并形成时间序列，并采用一个高斯随机过程的样本函数来表示噪声模型。

Our method provides a flexible means to control the ion current which has been very difficult to do. A lower current also reduces the requirement on the power supply as well as other instrumental concerns such as secondary electron emission and x-ray shielding, both of which are very serious for high-voltage implantation.

我们的方法提供了一个简易可行的控制离子电流的手段，较低的离子电流对负高压功率要求降低，同时也减低了对二次电子发射和x射线屏蔽的要求，这在高电压注入中尤为突出。

The pump self-absorption capacity, the use of high-power axis, the unique advantages of long life, it has a broad scope of application.

该泵的自吸能力强，轴功率利用高，使用寿命长的独特优点，使其具有广泛的适用范围。

The investment of the constant capital is 319 thousand yuan, the investment of the flow capital is 50 thousand yuan The money includes self-raised money 269 thousand and the applied loans 100 thousand yuan.

该产品用于提高电网的功率因素，降低电网中的高次谐波含量，提高电压质量，故该产品满足城乡电网中用量最大的一种电容器，市场需求量极大。

During the testing process, the circuit use the on-off power supply's pull and push structure as prototype, gaining a additional LC in series resonance circuit, which is also a opposite sharp structure. In the same frequency,and in the work state of work voltage, receiving even more high efficiency and output power.

该电路在实验过程中以开关电源推挽式结构为原型，改进得到一个附加了LC串联谐振回路的反激式结构，在同等工作频率、工作电压的状态下，得到了比推挽式结构更高的效率和输出功率。

Has been pioneering since 2002, has always pursued in good faith for the purpose, produce a series of ceramic winding resistance, resistance of carbon, metal oxide film, fuse resistors, no sense of resistance, such as .2003 years, more aimed at China prosperous electrical market, it is a long time use of household electrical appliances of today, I am the first to introduce the new aluminum shell factory sealed fixed resistors, and my company,"the city of Canton by a certificate of inspection and access to export quality of the authority of the European Union CE certification" It has small size, high-density, non-emotional, power, and the process of professional potting with similar foreign products, when hot and stronger, more heat resistance, humidity, high resistance to earthquake, explosion, etc., look professional design more rapid cooling.

深圳市嘉艺虹曦电子有限公司自2002年创业以来，一向奉行以诚信为宗旨，生产系列陶瓷绕线电阻，碳阻，金属氧化膜，熔断电阻，无感电阻等。2003年，更针对中国繁盛的电器市场，人们长时间使用家电产品的今天，我厂率先推出新型铝壳密封式固定电阻器，我公司并获得"广州市质检所合格证书和获得出口欧盟质量权威CE认证"，它具有体积小，高密度，无感性，功率大，专业的工艺灌封与国外同类产品，遇热更坚固，更耐温，耐潮湿，高抗防震，防爆等优点，外型专业设计更具有散热快。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。