Raster translation optical modulator and array
A light modulator, translational technology, applied in the direction of instruments, optics, optical components, etc., can solve the problems of low effective diffraction area of GLV and difficulty in integration, achieve fast modulation speed, simple manufacturing process, and reduce pixel gap Effect
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[0030] Below in conjunction with accompanying drawing and embodiment the present invention is further described:
[0031] figure 1 In this process, a layer of oxide 2 is deposited and grown on a silicon substrate 1, and then an etching insulating layer 3 and a negative electrode 4 are deposited, and the bottom reflective surface 5 is plated, and a top reflective surface 6 is formed by depositing a sacrificial layer, and then Etch the required grating on it, the grating is the positive electrode, and finally release the sacrificial layer to get the following figure 1 structure shown. The incident light is actually double-modulated by the top grating and the hollowed-out bottom grating. The modulation effect varies with the distance between the two gratings, and its principle is similar to that of a rectangular groove phase grating. The distance between them can be adjusted by the bias voltage applying device 8 . The top reflective layer 6 is supported by four rotationally sy...
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