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首页> 外文期刊>Plasma and Fusion Research >Measuring Faraday Effect in Z-Cut Crystal Quartz at Wavelength of 118.8 μm for Polarimeter
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Measuring Faraday Effect in Z-Cut Crystal Quartz at Wavelength of 118.8 μm for Polarimeter

机译：用偏光计测量波长为118.8μm的Z切割晶体石英中的法拉第效应

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Faraday rotation angle in Z-cut crystal quartz at a wavelength of 118.8 μm was measured for the first time. Z-cut crystal quartz is used in vacuum windows of polarimeters for plasma diagnostics that use far-infrared light. ITER poloidal polarimeter uses double vacuum windows of 10-mm Z-cut crystal quartz discs in compliance with nuclear safety. According to the Becquerel model, thick Z-cut crystal quartz may lead to non-negligible Faraday rotation that must be compensated for to measure the pure polarization change attributable to the plasma. For the first time, this paper measures Faraday rotation at the wavelength of 118.8 μm by means of the rotating linear polarizer method. The Becquerel model is not applicable at the wavelength of 118.8 μm and Faraday rotation resulting from the Z-cut quartz vacuum window is negligible even with a magnetic field of 0.3 T and a 10-mm thick vacuum window.
机译：首次测量Z切割晶体石英中法拉第旋转角在118.8μm的波长。 Z切割晶体石英用在旋光仪的真空窗口中，用于使用远红外光的等离子体诊断。 ITER极向旋光仪使用10毫米Z形切割石英晶体圆片的双重真空窗口，符合核安全要求。根据Becquerel模型，厚Z切晶体石英可能会导致不可忽略的法拉第旋转，必须对其进行补偿以测量可归因于等离子体的纯极化变化。本文首次通过旋转线性偏振器方法测量了118.8μm波长的法拉第旋转。 Becquerel模型不适用于118.8μm的波长，即使在0.3 T的磁场和10 mm厚的真空窗口下，Z形切割石英真空窗口产生的法拉第旋转也可以忽略不计。

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