| 摘要 |
An electro-optical modulator/deflector including electro-optical material and an electrode pattern arranged in response to a voltage supply to provide an electric field in the material to influence the deflection of a light beam at the moment of total internal reflection, and at least one further electrode arranged such that on application of a high voltage between said further electrode or electrodes and said electrode pattern there is in use generated within said electro-optical material in the region of said electrode pattern a phase change in the wavefront of the light beam in a sense opposite to the phase change caused by an inherent diffraction grating effect of the electrode pattern.
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