Exceptional Points in Photonic Grating Band Diagrams Lead to Decay-Free Radiation

Alexander Yulaev, Sangsik Kim, Qing Li, Daron A. Westly, Brian J. Roxworthy, Kartik Srinivasan, Vladimir Aksyuk

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We demonstrate that exceptional points in a photonic band diagram lead to constant-intensity free-space beams projected from grating couplers. Our findings pave the way for projecting spatially broad free-space beams with decay-free profiles.

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