查询词典 lasers

In the first section of the thesis, Er: YAG lasers of different mode and pulse width were used to ablate rabbit's corneas.

本研究的第一部分采用不同脉宽和模式的Er：YAG激光消融兔眼角膜组织。

Lasers characteristic as a shock wave drive and the advantages of KrF laser are explained. Finally, the progress at home and abroad is enumerated.In chapter two, the basic principle of the EOS study is introduced. Specially, the impedance mismatch effect of the double-layer flyer is mentioned here. It is the primary theoretical basis of this paper.In chapter three, a one-dimension, three-temperature hydrodynamic code HYADES is introduced briefly. it is used to make a qualitative analysis about how the thickness of ablator affect the flyer velocities and stability.In chapter four, the experimental setup is described.

第一章为绪论部分，简要总结了状态方程研究的历史，激光作为冲击波驱动源的特点和KrF激光的优势，以及国内外的进展情况；第二章是本工作的理论基础，讨论了冲击波物理和雨贡纽曲线测量的基本原理和方法，重点介绍了激光飞片法的特点、关键要素和双层飞片的阻抗失配效应，鉴于KrF激光短波长和长脉宽的特点，我们拟对双层飞片的特性展丌研究工作，为实测状态方程做好准备；第三章简单介绍了一维三温流体力学数值模拟程序Hyades并运用它进行了若干状态方程实验的计算和设计，进行了烧蚀层厚度对飞片速度、稳定性的影响的定性分析；第四章是实验平台描述部分，介绍了光束平滑化技术，靶的制作，条纹相机的原理和使用，系统同步控制以及光学记录速度干涉仪系统的简单原理和构成。

Absolute frequency stabilization of diode lasers of wavelength nm grade are reported using the modulation transfer method .

阐述了利用调节及转换技术稳定激光二极管发射器的频率，这种发射器可以发射纳米波长的激光。

Absolute Frequency Stabilization of Diode-laser-pumped Nd:YAG Lasers to Hyperfine Transitions in Molecular Iodine. Opt Letters 1992; 17: 1204

我们认为，P(52)32-0完全可能成为未来的国际推荐谱线，在532nm Nd：YVO4/KTP倍频激光的调谐范围内使用。

He is also a living power battery, absorbing any energy directed at him, from sunlight to high-powered lasers.

他也是一个活生生的蓄能体，可以吸收任何被触及的能源。他把太阳能转化为高强度镭射光。

ABSTRACT The development history and current research state of pulsed discharge-excited alkaline-earth Metal Vapor Lasers were reviewed in detail in the paper. After all those multi-mechanism lines region from ultraviolet to infrared had been successfully obtained in our experiments, a consistent model has been build up for longitudinal pulsed discharge excited He-Sr vapor laser.

详细评述了脉冲放电激励的碱土金属蒸气激光的发展历史和现状，在实验上成功实现碱土金属多种机制从紫外到红外的多条激光谱线后，对纵向脉冲放电激励的He-Sr蒸气激光建立了一个完善的、自恰的激光动力学模型。

With the invention of the chirped pulse amplification technology more than 10 years ago, a new generation of lasers appear.

随着发明的啁啾脉冲放大技术技术10多年前，新一代激光的出现。

At present, the ring lasers have been developed as the angular velocity and angle sensors.

目前环形激光器已发展成为角度和角速度传感器。

The results show that injection locking synchronization is realized when injection rate is large enough. In the injection locking regime, similarity index is larger for external modulation than that for direct modulation. If injection rate keeps unchanged, synchronization is little affected by modulation index, but it is affected by modulation frequency. Since outputs of the master laser are antiphase for direct modulation and external modulation, the fluctuations of similarity index with modulation frequency for the two lasers are contrary.

研究结果表明：当注入强度足够大时，系统实现注入锁定同步，外部调制的相似指数大于内部调制；注入强度恒定时，同步品质几乎不受调制指数的影响，而受调制频率的影响；由于内部、外部调制引起主激光器的输出反相，两种调制方式下同步品质随调制频率的变化趋势也相反。

The differences of electric field distribution produced by the variation of parameters in multiple structure asymmetric electrodes system for high power gas lasers are studied.

高功率气体激光器的非对称复杂电极系统中，电极参数的变化以及预电离结构的引入将会使所设计的均匀电场发生具体的改变。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。