Lecture

Physics of Bragg Mirrors

In course

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Description

This lecture introduces Bragg mirrors, also known as distributed Bragg reflectors (DBRs), as an alternative to metallic mirrors, achieving reflectivities over 99%. The physics behind DBRs, based on optical thickness and constructive interference, is explained. Specific features of DBRs are discussed, followed by a review of Fabry-Perot cavities. Planar microcavities, the microscopic counterparts of Fabry-Perot cavities, are introduced, emphasizing photon storage for light-matter interaction. The lecture touches on weak and strong coupling regimes in the context of Bragg mirrors. Examples of DBRs are provided, showcasing their high peak reflectivity and compatibility with epitaxial requirements.

Instructor

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Official source

https://mediaspace.epfl.ch/media/0_ithbowm8

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Ontological neighbourhood

Electrical engineering

Photonics: Topics in photonics

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