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- A novel all-optical wavelength conversion (AOWC) based on the cascaded sum frequency generation (SFG) and difference frequency generation (DFG) in LiNbO?3 waveguides have been theoretically studied. 对基于级联和频差频非线性效应铌酸锂光波导新型全光波长转换器进行了理论研究。
- Recently, SFG (sum frequency generation vibrational spectroscopy) has been developed into a powerful technique to probe in-situ surface composition and orientation information at submolecular level. 近年来发展起来的和频振动光谱(SFG)能在准单分子层水平上原位研究聚合物表面的基团及其取向等信息，被认为是表征聚合物界面结构的最佳技术手段之一。
- A novel all-optical wavelength conversion (AOWC) based on the cascaded sum frequency generation (SFG) and difference frequency generation (DFG) in LiNbO3 waveguides have been theoretically studied. 对基于级联和频差频非线性效应铌酸锂光波导新型全光波长转换器进行了理论研究。
- Active synchronization of two independent femtosecond and picosecond lasers and sum frequency generation of two laser pulses 飞秒与皮秒激光脉冲的主动同步及和频产生宽带超短激光的研究
- 5 Theoretical Analyzing of Optical Parametric Oscillation with Intracavity Sum Frequency Generation[J]; Chinese Journal of Lasers; 1999年05期; 464-469 4姚建铨,张百钢,路洋,丁欣,徐德刚,王鹏;基于周期性极化铌酸锂的波长可调谐光参量振荡器(英文)[J];人工晶体学报;2004年04期;15-20
- sum frequency generation 和频率发生
- The principle of all-optical wavelength conversion based on the cascaded sum and difference frequency generation (SFG+DFG) in quasi-phase-matched (QPM) periodically poled LiNbO3 (PPLN) waveguides is introduced. 介绍了基于准相位匹配周期极化反转铌酸锂光波导的和频与差频(SFG+DFG)级联型全光波长转换技术的基本原理。
- The quantitative relation model was established between the fundamental or sum frequency and properties of straight chain alkanes. 在此基础上建立了直链烷烃的物化性能与基频和总频之间的定量相关模型.
- According to Sellmeier's equations for BBO crystal,the relationship of phase matching angle of generating the sum frequency effect to wavelength is theoreti-cally calculated. 根据BBo晶体Sellmeier方程确定的折射率，计算了在钛宝石激光可调谐波段的和频相位匹配角。
- The heterodyning principle is well known in nonlinear optics as difference frequency generation (DFG). 在非线性光学领域,超外差原理就是著名的差频产生(DFG)技术。
- The UV pump radiation was obtained through a sum frequency process of the fundamental and the second harmonic of a CW mode locked Nd: YLF laser, where a novel wald off compensation scheme was adopted. 紫外泵浦光由连续波锁模Nd:YLF激光器输出的1053nm基频光与5265nm二倍频光经和频过程得到,和频过程采用了走离补偿新方案。
- Purpose: Audio frequency general purpose ,driver stage amplifier applications. 用途:用于音频放大,激励级放大。
- Various wavelength conversion (WC) techniques are introduced, and two are chosen to be used in all optical transparent networks. These are four wave mixing (FWM) and difference frequency generation (DFG). 该文首先简单介绍各种波长变换技术;对比它们的优缺点;选出两种能用于未来全光透明网络中的波长变换技术:四波混频波长变换技术和差频波长变换技术.
- In chapter five, the generation principle of THz-wave is introduced. The generation of THz-wave using Cerenkov-type difference frequency generation (DFG) is also discussed theoretically. 第五章讨论了THz波的产生机理,并对切伦科夫型差频产生THz波进行了理论分析。
- self sum frequency laser crystal 自混频激光晶体
- All-optical wavelength conversion (AOWC) is mainly implemented by using four nonlinear effects: cross gain modulation (XGM), cross phase modulation (XPM), four wave mixing (FWM), and difference frequency generation (DFG). 实现全光波长转换主要利用四种非线性效应 :交叉增益调制 (XGM)、交叉相位调制 (XPM)、四波混频 (FWM)和差频 (DFG)效应。
- I had to spend a large sum of money to get it back. 我得花一大笔钱才把它弄回来。
- They clubbed together a large sum. 他们集资到一大笔款子。
- Please sum up what you said just now. 请把你刚才说的总结一下。
- The clerks figures up the sum on a computer. 办事员用计算机算出总教。
