查询词典 lasers

Lasers are used in our homes in music CD players and videodisc players, which offer much better audio and video reproduction than we get from audiotapes or VCRs.

在家庭里，激光还用在CD唱机和VCD机上，它们比传统的录音机和录象机播出的声音和图象要清晰地多。

Wailer: T3 heavy gunship, armed with nanite missiles, disintegration pulse lasers, and a radar-jamming suite.

- Wailer： T3 重型武装直升机，配备有n anite导弹，解体脉冲激光器，雷达干扰套房。

In the following, we studied the Raman interaction of a trapped ultra-cold ion with two traveling lasers without limitation of the Lamb-Dicke limit and weak excitation, the chaotic behavior of the system is shown in the wide range of the parameter.

接着研究在没有Lamb-Dicke极限和弱激发的限定，单个囚禁超冷离子与两束行波激光的Raman相互作用过程，在一个宽的参数范围内研究了单个超冷离子的混沌行为。

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。

The thermal effect of the working substance during the laser output in all solid state lasers and the common calculation methods of temperature distribution are mainly studied.

讨论了在非线性光学频率变换过程中的非线性晶体的热效应问题和温度梯度的一般计算方法以及其中的温度梯度引起的对于基频光的相位失配。

The propagation property of apertured laser beams (propagation and control of actual high-power lasers) is a complicated and challenging subject in the field of high-power-laser technology and a frontier subject many researchers devoting to.

受光阑限制光束传输特性(实际强激光的传输与控制)是强激光技术研究领域中面临的具有相当的复杂性和挑战性的课题，也是国际同行们正在努力研究的前沿课题。

A new dynamic model is developed for simulating the widely tunable grating assisted codirectional coupler with rear sampled grating reflector lasers.

提出了一个新的分析模型，用于宽带可调谐GCSR激光器的动态特性模拟。

Collimation and test of semiconductor lasers in laser fuze［J］.

激光引信中半导体激光器的准直及其测试［J］。

Both UV and NIR lasers were collinearly focused into 2.0 atm Ar gas cell,when satisfying the conditions of space-time overlap,the full width at half maximum spectrum of UV could grow from 2.6 nm without interaction situation to 6.4 nm,a factor-of-2.5 improvement,which can provide a valid way for attaining sub-20fs ultrafast pulses in the range of UV.

将紫外激光与近红外激光共线聚焦注入2.0 atm氩气样品池中，在满足时空重合条件时，半高全宽的紫外频谱宽度可从无相互作用时的2.6 nm展宽至6.4 nm，增加2.5倍，为进一步获取该波段小于20fs超快脉冲提供一个重要的途径。

One Colossi will be able to kill a group of Marines with one sweep of its lasers.

一个巨像的一次激光扫射可以干掉一队的机枪兵。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。