frequency crystals meaning in Chinese
频率水晶
Examples
- The dissertation discussed the theories of second - harmonic generation for negative uniaxial optical crystal and summarized properties of nonlinear optical crystals , which are subjected to ultraviolet second - harmonic generation , and represented the theorizational law of double frequency crystal select ( tldfcs ) . at present , bbo crystal is the most subjected to commercial crystal of ultraviolet second - harmonic generation according to compared kdp , bbo , clbo , kabo and kbbf crystals based on tldfcs
论述了负单轴晶体的倍频理论，总结了适用于紫外倍频的非线性光学晶体的特性，提出了倍频晶体选择的理论依据，并根据该依据通过比较，最后选定bbo晶体为目前最适宜用于产业化的紫外倍频晶体。 - Firstly , we analyze the character of nd : yag , bbo and lbo , for nd : yag crystal and select the nd : yag as the gain medium and lbo as doubling - frequency crystal . ln the theory , analyzing the parameter of the gain medium length , the ratio of the pump - and laser - beam waists . based on the above analysis , we design the resonance cavity
首先，我们对增益介质的性质和非线性晶体bbo和lbo的一些性质进行了比较，选取nd ： yag作为增益介质， lbo作为倍频晶体。理论上分析了激光器设计中的一些参数值，如增益介质长度、模式交叠率、最佳倍频条件，并根据理论分析结果设计了谐振腔。 - Abstract : in view of the crystal structure , this paper repo rts thecharacter of single crystal growth of germanate and the properties as me dium of laser crystal . the study and progress in germanate crystals used as widel y tunable laser crystal , self - doubling - frequency crystal and highly efficient and low pumping threshold laser crystal are introduced
文摘:从晶体结构上分析了锗酸盐的单晶生长和作为激光晶体基质的特点，并介绍了锗酸盐作为可调谐激光晶体，自倍频晶体，高转换效率和低泵浦阈值的激光晶体的研究及进展。 - The stability output second harmonic generation ( shg ) experiment results of single - longitudinal mode and multi - longitudinal mode with long cavity were explained reasonably with these rate equations . the high polarization of fundamental wave in the isotropic laser media nd : yag with type - i critical phase - matching lbo was studied with the rate equations including polarization of fundamental light . using the polarization function of lbo , a quartz full - wave plate was introduced into the cavity , a kind of birefringent filter by considering the combination of the polarization function of the type - i critical phase - matching doubling frequency crystal lbo and the quartz whole - wave plate was constructed
将腔内多纵模倍频速率方程推广应用到准三能级蓝光激光器中，分析了一个纵模、两个纵模、多个纵模时的噪声情况，合理地解释了实验中激光器单纵模运转以及长腔多纵模运转时稳定输出的实验现象，同时利用该速率方程分析了以各向同性激光晶体nd : yag为工作物质，类临界相位匹配lbo为倍频晶体的蓝光激光器中基频光偏振特性，合理利用类临界相位匹配lbo倍频晶体的偏振特性与引入的石英晶体全波片构成双折射滤光片，通过选单频来抑制噪声，获得了蓝光低噪声的稳定输出。 - The major job is manufactured a transmitter , which has three upmixer channels . its function is to up convert the signals from c - band to ka - band . the input local oscillator is provided by a low frequency crystal oscillator which has a good performance of phase noise , through 512 times multiply to ka band . this sysetem is used in the laboratory as transmitter source of the fuze , for the multidimensional objects in practise , which lead to the complexity of the reflect signal , so the amplitude , frequency and the phase of the transmit signals both have a key role in dealing with the reflection signals . therefore , this system requires for both the coherence of the single channel ’ s amplitude , phase and multi channels
本文的主要工作是应用户要求制作一具有三发射通道的上变频系统,可以将c波段的微波信号上变频到ka波段的毫米波信号。系统的本振输入基频由一相位噪声非常好的低频率晶振提供,经过512次的倍频放大至ka波段。本系统作为实验室中引信的发射源,由于目标反射信号具有时变的多维性,反射信号变得极为复杂,在信号处理时,不仅信号幅值、频率有决定意义而且相位关系也很有决定意义。