Close to perfect transmission of unpolarized infrared radiation through one-dimensional metal grating embedded in monolithic high-contrast grating

Tomasz G. Czyszanowski; Adam K. Sokół

doi:10.1117/12.2578390

5 March 2021 Close to perfect transmission of unpolarized infrared radiation through one-dimensional metal grating embedded in monolithic high-contrast grating

Tomasz G. Czyszanowski, Adam K. Sokół

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Proceedings Volume 11694, Photonic and Phononic Properties of Engineered Nanostructures XI; 116940Z (2021) https://doi.org/10.1117/12.2578390
Event: SPIE OPTO, 2021, Online Only

Abstract

Transparent electrodes implemented on semiconductors are essential components of optoelectronic devices, however, overcoming Fresnel limit and approaching perfect optical transmission together with high electrical conductivity are still a challenge. In this talk, by numerical simulations, we demonstrate a simple polarization-independent mechanism of infrared light funneling through subwavelength one-dimensional metal grating electrode integrated with monolithic high-contrast grating (MHCG). We show optical transmission of 97% through the electrode implemented at the interface between air and high refractive index semiconductor for radiation from broad infrared spectrum and revealing excellent electrical properties determined by sheet resistance below 1 Ohm/Sq.

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Tomasz G. Czyszanowski and Adam K. Sokół "Close to perfect transmission of unpolarized infrared radiation through one-dimensional metal grating embedded in monolithic high-contrast grating", Proc. SPIE 11694, Photonic and Phononic Properties of Engineered Nanostructures XI, 116940Z (5 March 2021); https://doi.org/10.1117/12.2578390

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KEYWORDS

Metals

Infrared radiation

Electrodes

Semiconductors

Interfaces

Refractive index

Transmittance

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