sum frequency

An LD-end-pumped Nd : YVO _ 4 crystal 593 nm yellow laser by intracavity sum-frequency mixing ( SFM ) is reported.

报道了LD纵向泵浦 Nd:YVO4 晶体,经腔内和频得到593 nm 激光输出的实验研究.

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All-Solid-State Continuous-Wave Doubly Resonant All-Intracavity Sum-Frequency Mixing Cyan Laser at 500.8 nm

全固态复合式内腔和频500.8nm连续波青光激光器

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On the basis of phase matching conditions of sum-frequency and frequency of three-wave coupled equations, analyze the feasibility of using double LBO to achieve the process of sum-frequency.

从和频三波耦合方程及其相位匹配条件出发，分析双LBO晶体和频的可行性。

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Nonlinear susceptibility tensor for the sum frequency generation is derived and validated in the second harmonic generation.

推导得出对于和频情况下的非线性极化张量的表达式，并应用于倍频情况进行了验证。

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A blue green light with multi peak continues spectrum structure at 46 ￣ 560 nm generated by three wave sum frequency is also observed.

同时在460nm～560nm范围内有三波混频的兰绿光产生，其光谱呈多峰结构。

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Research on the relation of frequency sum to temperature in the four frequency RLG

四频激光陀螺和频与温度关系的研究

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METHODS: To collect the amount and sum of money of drugs consumed in this hospital in the first halves of1999,2000 and2001 and to analyse the frequency of antibiotics used.

方法：统计我院1999年上半年、2000年上半年、2001年上半年所有药品的用量和消耗金额，并具体分析抗生素的用药频度。

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