Polarization Independent Electro Optic Modulator

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Phase control of light beams of any polarization in a compact setup - VIDEO

We have developed an electro-optic modulator (EOM), that overcomes one of the major drawbacks of state-of-the art EOMs, the strong polarization dependence.

We achieve this by using two separate, orthogonal electric fields to create equal phase-shifts for all polarizations. Hence, phase-control of light beams of any polarization (including unpolarized light) becomes possible in a compact setup.

Inventors: Martin Lebrat, Gregor Jotzu and Anton Oettl, all  current or former members of  the Quantum Optics Group of Prof. Esslinger, ETH Zurich.

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