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- frequency double klystron 倍频速调管
- High power end-pumped intracavity frequency doubling Watt-level green laser[J]. 引用该论文 赵致民;李隆;田丰;李春;白晋涛.
- Abstract： The system control structure which can realize adjusting speed and diff erency frequency double closed circle adjusting speed of the general frequency c onverter is introduced. 介绍了采用通用变频器实现转速、转差频率双闭环调速系统控制结构，在实验基础上对起动过程进行了分析。
- A brief analysis on frequency doubling at 852nm with BBO crystal has been presented. 简单介绍了BBO晶体852nm倍频的实验原理。
- The frequency doubling effects of the dually doped KTP crystals have been measured by powder frequency doubling method. 结果发现,3种双掺质KTP晶体的粉末倍频效应较之KTP均有所提高。
- Intracavity Frequency Doubling Nd:YAG Laser with Temperature Controling and High-pure KTP[J]. 引用该论文 孙渝明;侯学元;李宇飞;徐士华;刘恩泉.
- LD pumped intracavity frequency doubling 473 nmNd:YAG/LBO laser with low noise operation[J]. 引用该论文 李义民;檀慧明;付喜宏;田玉冰;王保山.
- acousto-optic mode-locker frequency double 声光锁模倍频器
- In the stopband of an LPF with a6 dB/ octave slope, for example, every time the frequency doubles, the amount of attenuation increases by6 dB. 例如，在低通滤波器的抑止频带，八度音程（分贝）率表示频率每翻一倍，衰减量就降6分贝。
- When the deformable mirror is drived by the cosinoidal signal, the response equilibrium displacement is frequency doubling cosinoidal. 当变形镜由余弦电压驱动时,平衡位移的响应为2倍频的余弦信号;
- A blue violet laser is described by direct laser diode frequency doubling with a new nonlinear organometallic complex CMTC crystal. 报道了用新型络合物非线性光学材料硫氰酸汞镉（CMTC）晶体实现激光二极管室温下直接倍频，产生蓝紫光激光输出。
- In this paper,the mutagenic effect of HeNe laser,Nd:YAG frequency doubling pulse laser and UV on abscisic acid(ABA) producing strain was compared. 本实验对比紫外、HeNe激光、Nd:YAG倍频脉冲激光对脱落酸产生菌的诱变效果。
- Near infrared spectroscopy consists of frequency doubling and combination band of molecular vibration spectrum.It is absorbed primarily by hydric group. 近红外光谱为分子振动光谱的倍频和组合频谱带,主要是含氢基团的吸收,包含了绝大多数类型有机物组成和分子结构的丰富信息。
- According to physical signification,three metrical methods are introduced: optical communication stimulant method,extremal measure method and frequency doubling modulation method. 根据其物理意义,介绍了三种测量方法:光通信模拟法、极值测量法、倍频调制法。
- Simulation results indicate that the method can detect FHR from the Doppler ultrasonic signals and solve the problems of frequency doubling and halving. 仿真结果表明,该方法能准确地从超声多谱勒信号中提取胎心率,成功地解决了现有的胎心监护仪存在的加倍、减半的问题。
- Methods and mechanism of obtaining single-frequency in all-solid-state intracavity frequency doubling lasers by single-longitudinal-mode ways are described in this paper. 本文详细分析了用单纵模法实现全固态腔内倍频激光器单频输出的各种方法和实验装置。
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- Its light source is a dual pulse and dual wavelength Cr:LiSAF laser. The outputs of secondary harmonic and triple harmonic are realized through intracavity frequency doubling and intracavity Q modulating by BBO crystal. 其光源为一台双波长双脉冲可调谐Cr:L i SAF激光器 ,采用 BBO晶体腔内倍频和腔内调 Q技术 ,实现了二次和三次谐波输出 ;
- GSR plans to double the Ghan’s frequency in 2005. 2005年，“大南方铁路”计划将乘坐甘线列车的乘客人次增加一倍。
