| 摘要 |
A light beam deflector comprising a modified asymmetric Fabry-Perot (Gires-Tournois) etalon having a back reflecting and electrically conducting mirror and a front partially transmitting mirror spaced apart by an electro-optic material, there also being a transparent sheet resistor between the electro-optic material and the front mirror. The invention further comprises a pair of electrodes contacting two generally parallel edges of the transparent sheet resistor so that if different voltages are applied between the electrodes with respect to the back conducting mirror, a front to back electric field which varies in a linear manner from one electrode to the other will be produced. By utilizing an electro-optic material with either a linear longitudinal electro-optic effect or one having a linearized quadratic electro-optic effect, a linear variation of refractive index in the material will be produced between the electrodes, further resulting in a linear phase shift across a light beam impinging on the front and undergoing multiple reflections inside the electro-optic material and still further resulting in an overall deflection of the reflected beam.
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