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- sum frequency mixing 和频
- Based on frequency mixing technique, the hardware of this system, including UHF sensor and UHF receiver, was developed. 基于混频技术研制了系统硬件,它包括特高频传感器和特高频接收机。
- 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。
- With HTS Josephson junction as the mixing element, 50th harmonic frequency mixing at 3mm wave band is obtained on the system. 在该系统上成功实现了高温超导混频器在3毫米波段的50次谐波混频。
- 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。
- 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。
- Its error source and the way of changing are analyzed, especially for two factors, i.e., elliptic polarization of laser and installation error of Wollaston prism, which can cause frequency mixing errors in common path heterodyne interferometer. 重点分析了在共光路外差干涉仪中由激光光源的椭圆偏振化和Wolaston棱镜的安装方位角引起的频率混叠误差的大小及变化规律。
- 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。
- Frequency mixing errors caused by the two factors existing at same time, which are elliptic polarization of laser source and installation azimuthal error of Wollaston prism, were analyzed especially in common path heterodyne interferometer. 着重分析了在共光路外差干涉仪中由激光光源的椭圆偏振化和沃拉斯顿棱镜的安装方位角误差同时存在的情况下,引起的频率混叠综合误差的大小及变化规律。
- 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。
- optical frequency mixing technique 光混频技术
- self sum frequency laser crystal 自混频激光晶体
- 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。
- Ten years was the sum total of my education. 我受教育的年限加起来共十年。
- Parameters Estimation of BPSK Signal Based on Frequency Mixing 基于混频的二相编码信号参数估计
- The company set this sum by for future use. 公司把这笔款留作将来之用。