What theoretical ratio of high-to-low refractive indices is needed to give at least 90% reflectance in a high-re- flectance stack of two double layers of quarter-wave layers at normal incidence? Assume a substrate of index 1.52.
What theoretical ratio of high-to-low refractive indices is needed to give at least 90% reflectance in a high-re- flectance stack of two double layers of quarter-wave layers at normal incidence? Assume a substrate of index 1.52.
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![15 What theoretical ratio of high-to-low refractive indices is
needed to give at least 90% reflectance in a high-re-
flectance stack of two double layers of quarter-wave layers
at normal incidence? Assume a substrate of index 1.52.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbf9f0a02-30f0-4271-9f34-3c140c5d8d37%2F8c2f0934-945f-43bc-adad-eddad5717fe2%2Fz3j27qb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:15 What theoretical ratio of high-to-low refractive indices is
needed to give at least 90% reflectance in a high-re-
flectance stack of two double layers of quarter-wave layers
at normal incidence? Assume a substrate of index 1.52.
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