Coupled Tamm Phonon and Plasmon Polaritons for Designer Planar Multiresonance Absorbers
Abstract
Wavelength‐selective absorbers (WS‐absorbers) are of interest for various applications, including chemical sensing and light sources. Lithography‐free fabrication of WS‐absorbers can be realized via Tamm plasmon polaritons (TPPs) supported by distributed Bragg reflectors (DBRs) on plasmonic materials. While multifrequency and nearly arbitrary spectra can be realized with TPPs via inverse design algorithms, demanding and thick DBRs are required for high quality‐factors (Q‐factors) and/or multiband TPP‐absorbers, increasing the cost and reducing fabrication error tolerance. Here, high Q‐factor multiband absorption with limited DBR layers (3 layers) is experimentally demonstrated by Tamm hybrid polaritons (THPs) formed by coupling TPPs and Tamm phonon polaritons when modal frequencies are overlapped. Compared to the TPP component, the Q‐factors of THPs are improved twofold, and the angular broadening is also reduced twofold, facilitating applications where narrow‐band and nondispersive WS‐absorbers are needed. Moreover, an open‐source algorithm is developed to inversely design THP‐absorbers consisting of anisotropic media and exemplify that the modal frequencies can be assigned to desirable positions. Furthermore, it is demonstrated that inversely designed THP‐absorbers can realize same spectral resonances with fewer DBR layers than a TPP‐absorber, thus reducing the fabrication complexity and enabling more cost‐effective, lithography‐free, wafer‐scale WS‐absorberss for applications such as free‐space communications and gas sensing.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 28, 2023
- Source ID
- 10.1002/adma.202209909
Entities
People
- Angela Cleri
- Eli Janzen
- Guanyu Lu
- J. Ryan Nolen
- James H Edgar
- Jon‐paul Maria
- Josh Nordlander
- Joshua D Caldwell
- Katja Diaz‐Granados
- Ming-Ze He
- Nathaniel S. Mcilwaine
- Thiago Arnaud
- Thomas. G. Folland
Organizations
- Army Research Office
- City University of New York
- Kansas State University
- National Science Foundation
- Office of Naval Research
- Pennsylvania State University
- University of Florida
- University of Iowa
- Vanderbilt University