论文标题
抗反射涂层界面的逆转反射系数的光谱依赖性的低相干干涉测量值
Low coherence interferometric detection of the spectral dependence of the retro-reflection coefficient of an anti-reflective coated interface
论文作者
论文摘要
抗反射涂层界面的非常低反射系数的测量已成为实现精确仪器（例如用于检测引力波的巨型干涉仪）的关键问题。我们在本文中提出了一种基于低相干干涉和平衡检测的方法，该方法不仅允许在幅度和相位获得此反射系数的光谱依赖性，其敏感性为0.1 ppm，光谱分辨率为0.2 nm，而且还可以消除与可能存在的不存在的室内界面相关的杂种影响。该方法还实现了类似于傅立叶变换光谱法中的数据处理。在建立了控制该方法准确性和信噪比之比的公式之后，我们提出了在各种实验条件下成功运作的完整证明的结果。
The measurement of very low reflection coefficients of anti-reflective coated interfaces has become a key issue for the realization of precision instruments such as the giant interferometers used for the detection of gravitational waves. We propose in this paper a method, based on low coherence interferometry and balanced detection, which not only allows to obtain the spectral dependence of this reflection coefficient in amplitude and phase, with a sensitivity of the order of 0.1 ppm and a spectral resolution of 0.2 nm, but also to eliminate any spurious influence related to the possible presence of uncoated interfaces. This method also implements a data processing similar to that used in Fourier transform spectrometry. After establishing the formulas that control the accuracy and the signal-to-noise ratio of this method, we present the results that provide a complete demonstration of its successful operation in various experimental conditions.
