... 则t E t E 2 2 0 0 cos cos ) ( 仅保留两项 与入射光同频率的光 光学倍频 (optical frequency doubling) 光学整流 (optical rectification) t E t E 2 cos 2 1 2 1 cos 2 0 0 t E E cos 0 1.
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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。
In this paper the defects in a new type of high-gain, low-threshold, self-active, self-frequency-doubling NYAB crystal are investigated by optical methods.
本文报告了用光学方法研究高增益、低阈值的新型自激活自倍频的四硼酸铝钇钕(NYAB)晶体的缺陷。
Furthermore, in the approximations of the exact phase matching, compared with the ideal case, the frequency-doubling efficiency reduced by multi-optical coatings is not more than 6%.
在近似相位匹配下，倍频效率相对于理想情况降低幅度不超过6%。
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