Figure 5
From: Mid infrared polarization engineering via sub-wavelength biaxial hyperbolic van der Waals crystals
Phase difference (\(\delta\)) between x- and y-components, angle of the polarization state (\(\phi\)) and logarithmic ellipticity (\(\log (\sqrt{e})\)) of transmitted light through (a–c) \(\alpha\)-\(\hbox {MoO}_{{3}}\) thin film and (d–f) \(\alpha\)-\(\hbox {V}_2\) \(\hbox {O}_5\) thin film, respectively, as a function of frequency (\(\omega\)) and rotation angle (\(\alpha\)).
