Acher, Olivier VASP_635nm.avi Separation of polarised beam through a Variable Angle Polarisation Splitter (VASP) at 650nm, for various settings Instrumentation, Measurement, and Optical Sensors 2019-09-26
    https://opticapublishing.figshare.com/articles/media/VASP_635nm_avi/8832398
10.6084/m9.figshare.8832398.v1