Wideband coherent perfect absorber based on white-light cavity

Omer Kotlicki, Jacob Scheuer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We present a new concept for a broadband coherent perfect absorber (CPA), utilizing the properties of white-light cavities. The designed structure attains coherent absorption over a wide spectrum (40 nm), overcoming the single-frequency limitation of conventional CPAs. A closed form analytic description is presented, supplemented by finite difference time-domain simulations for Si-based devices, demonstrating flat, wide-band power absorption. A new integrated-optics-based pulse absorber/terminator and optical modulator based on these devices are proposed and analyzed.

Original languageEnglish
Pages (from-to)6624-6627
Number of pages4
JournalOptics Letters
Issue number23
StatePublished - 1 Dec 2014


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