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High Q-factor microwave Fabry-Perot resonator with distributed Bragg reflectors

机译:具有分布式布拉格反射器的高Q因数微波Fabry-Perot谐振器

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摘要

A Fabry-Perot resonator operating at 39 GHz, with two pairs of quarter-wavelength single-crystal quartz Bragg reflectors has been realized. For the length of 98.26 mm, its Q-factor is about 560000, which is 4.3 times better than for the same resonator without Bragg reflectors. Rigorous finite-difference frequency-domain analysis has been applied to the problem and is compared with simplified semi-analytical solutions. Good agreement between theoretical and experimental resonant frequency arid Q-factors has been obtained. Thermal compensation of the resonant frequency of the Fabry-Perot has been proposed employing rods and cylinders made of metals with different thermal expansion coefficients.
机译:已经实现了工作在39 GHz的Fabry-Perot谐振器,带有两对四分之一波长单晶石英布拉格反射器。对于98.26 mm的长度,其Q因子约为560000,这是不带布拉格反射镜的相同谐振器的4.3倍。严格的有限差分频域分析已应用于该问题,并与简化的半解析解进行了比较。理论和实验谐振频率以及Q因子之间已经取得了很好的一致性。已经提出了使用由具有不同热膨胀系数的金属制成的杆和圆柱体来对法布里-珀罗谐振频率进行热补偿。

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