查询词典 laser diode

Stabilized wavelength of a diode laser on 3-4 transition of I ---I , the diode laser was used to probe SSG distribution of COIL by 1D scanning stage or 2D rotating mirror.

一维扫描平台沿气流方向测得的结果显示，增益在气流方向变化平缓，增益区较长。

With the ever-increasing needs of high power diode laser source, it is important to obtain symmetric diode laser beam with high power so that a kind of beam-shaping technique with isosceles right-angled prism group has been used to achieve this aim.

随着半导体激光器应用的日益广泛，半导体激光的光束质量在二维方向极不均衡的特点限制了它的应用范围。采用一种等腰直角棱镜组的整形方法，可实现二维方向的光束质量均匀化。

A simultaneous dual-wavelength continuous wave, quasi-cw or linearly polarized wave diode-end-pumped Nd:YAG laser operating at 1319nm and 1338nm is demonstrated. To the best of our knowledge, our experimental results achieve the highest level in the domestic domain. The simultaneous dual-wavelength laser provides an experimental basis for generating highly coherent THz wave radiation of 3.23THz by nonlinear optical difference frequency method.2. A diode-end-pumped Nd:YAG crystal, type-I critical phase matching LBO crystal intra-cavity frequency doubled, simultaneous multi-wavelength red laser at 659.5nm, 664nm and 669nm is firstly realized.

本论文主要围绕用于差频产生THz辐射源的多波长激光器及THz光子晶体的带隙特性分析而展开，论文的主要内容包括：一、从LD端面泵浦固体激光器的激光阈值公式出发，理论计算了腔镜对于两个波长的透过率关系，实现了LD端面泵浦Nd：YAG 1319nm/1338nm双波长激光连续、准连续及线偏振稳定输出。

In the first part, a novel paraboloidal lensed multimode fiber has been analyzed amply in the coupling between the high power single emitter broad area diode laser and multimode fiber, which has been verified in the experiment. In the second part, the coupling between the high power single emitter broad area diode laser and cylindrical lensed multimode fiber has been discussed detailedly.

主要通过计算机仿真抛物面型光纤微透镜和柱状楔形光纤微透镜与大功率宽发射域半导体激光器的多模光纤耦合效率，并在实验中进行验证，提出了提高大功率宽发射域半导体激光器与多模光纤耦合效率的新方法。

To study the lethal effect of high power near infrared diode laser on Locust Nymphae. Oedaleus asiaticus B. Bienko Nymphae that are the third age or before the third age and after the third age were irradiated aiming at the head in different time and power density by the power of 2W and the wavelength of 808nm diode laser. The death-ratio was observed especially after irradiation, five hours after irradiation and 20 o clock the next day after irradiation.

为研究大功率近红外半导体激光对蝗蝻的致死作用，选择采用功率2W、波长808nm的半导体激光器，针对三龄及以前龄期和三龄期后亚洲小车蝗蝻虫分组试验，激光束对准蝗蝻头部位置，进行不同功率密度、不同时间的照射试验，分别观察照射后即刻、照射后5小时和照射后次日蝗蝻的致死率。

In this thesis, Based on the advantages of diode-pumped solid-state laser in Chapter 1, the development of diode-pumped solid-state laser is introduced. The trends of DPSSL are pointed out, the wide application fields ,as well as the bright market future of high power DPSSL are also summarized. In the Chapter 2 , all kinds of solid-state laser gain materials are introduced in detail. In the Chapter 3 , the theory on the mode-matching of the pump beam and the cavity mode is analyzed in detail based on the basic theory and work principle of LD-pumped all-solid-state laser.

本论文第一章从二极管泵浦固体激光器的优势出发，介绍了二极管泵浦固体激光器的发展，指出了DPSSL的发展方向，概括介绍了大功率DPSSL的诸多应用领域和广阔的市场前景；第二章对固体激光增益材料作了详细的介绍；第三章基于LD泵浦固体激光器的基本理论和工作原理，从理论上详细分析了LD端面泵浦激光器中泵浦光与腔模的匹配问题。

In the working process of a laser diode, thermal noise, resulting from self-heating effect, should not be neglected.

研究表明，在激光器的工作过程中，由于自加热效应所引来的热噪音是不能够被忽略的。

Through the analysis of the loss and threshold characteristics of a laser diode, the threshold current density of LD with external feedback is calculated, according to the theory of multi-beam interference and the definition of equivalent reflection factor.

通过对半导体激光器的损耗和阈值电流特性的分析，引入等效反射系数的概念，根据多光束干涉的原理，导出了在外腔反馈作用下LD的阈值电流公式。

The paper presents a new kind of optical bistability consisting of an Avalanche Heterojunction Phototransistor and a semiconductor laser diode, four operating modes of this AHPT-LD-BOD system are also discussed when it works in the stable state.

本文研究了一种用雪崩异质结光晶体管和半导体激光器组成的新型光学双稳器件，讨论了在稳态工作时该双稳器件的四种工作模式。

A high power, narrow linewidth single frequency laser diode as one of the key elements of Integrated Optical Rotation Sensor is studied.

对谐振式集成光学角速率传感器的关键器件之一——大功率、窄线宽光源进行了分析与实验。

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。。。。