A simple inverter for polarization transformations

Details A simple inverter for polarization transformations A simple inverter for polarization transformations

2010-03-03

arxiv.org/abs/1003.0738v1

Physics

Optics

4 pages, no figure, submitted to J.Opt.Soc.Am. A

Scientific paper

It is shown that a transparent birefringent element whose eigenstates are a pair of elliptical polarizations with principalaxes along the x and y axes, sandwiched between a pair of orthogonal halfwave plates with principal axes along directions at 45 deg to the x and y axes, is equivalent to an element with the same eigenstates and eigenvalues but with the fast and the slow eigenstates interchanged. The device thus produces the inverse of the original unitary transformation. A similar result holds for a puredichroic element. With electrically switchable halfwave plates such a device can be used to switch the sign of optical activity or to rotate through 90 deg, without any moving parts, a linear retarder or a linear polarizer.

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