Compact Multifringe Interferometry with Subpicometer Precision
Compact Multifringe Interferometry with Subpicometer Precision
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DOI：
10.1103/physrevapplied.12.034025
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发表时间：
2019-09-13
影响因子：
4.6
通讯作者：
Gerberding, Oliver
中科院分区：
文献类型：
--
作者：
Isleif, Katharina-Sophie;Heinzel, Gerhard;Gerberding, Oliver
深度调频干涉测量法结合了光学极简主义和多条纹读出。然而，对于卫星大地测量的光学梯度计或地面重力实验的尺寸传感器等应用而言，精度是关键。我们提出了一个小于立方英寸的单分量干涉仪。其中两个相互比较，以证明倾斜和位移测量的精度小于20 nrad/根Hz和1 pm/根Hz的频率低于1 Hz。
Deep-frequency-modulation interferometry combines optical minimalism with multifringe readout. However, precision is key for applications such as optical gradiometers for satellite geodesy or as dimensional sensors for ground-based gravity experiments. We present a single-component interferometer smaller than a cubic inch. Two of these are compared to each other to demonstrate tilt and displacement measurements with a precision of less than 20 nrad/root Hz and 1 pm/root Hz at frequencies below 1 Hz.