Method for controlling growing multiple layer film for making multiple-level micro-reflector
A micro-mirror and multi-layer film technology, applied in the field of multi-level micro-mirror production, can solve the problems of difficult to precisely control corrosion or etching depth, difficult to guarantee horizontal accuracy, poor accuracy and repeatability, etc. Repeatability, high level accuracy, high flatness effect
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[0022] The method for manufacturing a multi-level micro-mirror by controlling the growth of a multilayer film of the present invention will be described in detail below. In this method, a multi-stage micro-reflector is made by a controlled growth multilayer film method. The total number of steps is 16, and the total width of the multi-stage micro-reflector is 8mm. The specific process flow is as follows:
[0023] (1) Use double-sided polished silicon or glass or silicon dioxide or silicon carbide or molybdenum wafers or quartz wafers with a surface roughness of 0.2 nm to 1 μm as the substrate, and clean it;
[0024] (2) Coating photoresist on the upper surface of the substrate, exposing and developing with the first lithography plate, hardening the film to form the required masking pattern; the width of the bright stripes and dark stripes of the first lithography plate are each L / 2 1 ; Then by magnetron sputtering or radio frequency sputtering or ion beam sputtering or DC sputteri...
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