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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Competition between two parametric processes in a pump source of terahertz-wave difference frequency generation
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Competition between two parametric processes in a pump source of terahertz-wave difference frequency generation

机译:太赫兹波差频生成泵浦源两种参数过程之间的竞争

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摘要

We present a comprehensive study of dual optical parametric oscillation (OPO) within one cavity, which is commonly used as the pump source of terahertz (THz) wave difference frequency generation (DFG). The growth of two output wavelengths with the OPO input energy is not synchronized, due to the competition. This phenomenon is analyzed experimentally and theoretically, to our knowledge, for the first time. A two-stage growth of the product of dual-wavelengths' energies (also the output of THz-DFG) is predicted: first as a line and later as a parabola. With a homemade organic crystal, monochromatic THz-DFG is achieved under the pump of this dual-OPO. A tuning range up to 30 THz and a highest signal-to-noise ratio of 600:1 (27.8 dB) are obtained at room temperature.
机译:我们在一个腔内对双光学参数振荡(OPO)进行了综合研究,该腔内通常用作太赫兹(THz)波差频率发电(DFG)的泵浦源。 由于竞争,两个输出波长的增长与OPO输入能量不同步。 这一现象是在实验和理论上分析我们的知识,这是我们的知识。 预测了双波长的能量产品的两级增长(也是THZ-DFG的输出):首先是一条线,后来作为抛物线。 利用自制有机晶体,在该双翼板的泵下实现单色THz-DFG。 高达30THz的调谐范围和600:1(27.8dB)的最高信噪比。

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