| 摘要 |
An embodiment of the present invention includes an outer capping layer, a multilayer (ML) stack, and an inner capping layer. The outer capping layer is made of an outer material and has an outer thickness. The multilayer (ML) stack is below the outer capping layer. The inner capping layer is made of an inner material and has an inner thickness and is located between the ML stack and a ML reflector. The inner thickness is selected to enable constructive interference between the ML stack and the ML reflector.
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