http://arxiv.org/abs/1903.02945
Deep frequency modulation interferometry combines optical minimalism with multi-fringe readout, precision however is key for applications such as optical gradiometers for satellite geodesy or as dimensional sensor 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 $20\,\mathrm{nrad}/\sqrt{\mathrm{Hz}}$ and $1\,\mathrm{pm}/\sqrt{\mathrm{Hz}}$ at frequencies below $1\,\mathrm{Hz}$.
K. Isleif, G. Heinzel, M. Mehmet, et. al.
Fri, 8 Mar 19
34/56
Comments: 6 pages, 4 figures