Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Substrate effects on the optical properties of metal gratings

Not Accessible

Your library or personal account may give you access

Abstract

The transmission and near-field enhancement spectra of thin metal gratings on a semiconductor designed for the telecom band, 1500nm, were investigated theoretically. It was found that around the wavelength λR, where a diffraction order changes its character between radiative and evanescent, the spectral peaks are pinned at λR. This state is in marked contrast to the gratings in air where the peak wavelength is always longer than λR. We show that the difference is related to the absence/presence of the bound mode (BM) of the system, which corresponds to the Fabry–Perot (FP) resonance of the slit mode. In the thin gratings on a semiconductor, the BM disappears due to the large dielectric asymmetry above and below the grating, which results in different reflection phases for the slit mode at the grating–dielectric interfaces. It is also shown that the plasmonic band gap is large in gratings on semiconductors, enhancing the disappearance of the BM.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Transmission resonances in plasmonic metallic gratings

G. D’Aguanno, N. Mattiucci, M. J. Bloemer, D. de Ceglia, M. A. Vincenti, and A. Alù
J. Opt. Soc. Am. B 28(2) 253-264 (2011)

Broadband THz radiation through tapered semiconductor gratings on high-index substrate

Truong Khang Nguyen, Phuc Toan Dang, Ikmo Park, and Khai Quang Le
J. Opt. Soc. Am. B 34(3) 583-589 (2017)

Fundamental and higher-order Bloch surface plasmons in planar bimetallic gratings on silicon and glass substrates

Andrey Kobyakov, Arash Mafi, Aramais R. Zakharian, Sergey A. Darmanyan, and Kevin B. Sparks
J. Opt. Soc. Am. B 25(9) 1414-1421 (2008)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (20)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved