Compact multi-fringe interferometry with sub-picometer precision
arXiv:1903.02945 · doi:10.1103/PhysRevApplied.12.034025
Abstract
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 and at frequencies below .
6 pages, 4 figures, accepted in Physical Review Applied