Polarization independence of extraordinary transmission trough 1D metallic gratings

Ongarello, T.; Romanato, Filippo; Zilio, Pierfrancesco; Massari, Michele

doi:10.1364/oe.19.009426

Cited by 26 publications

(13 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…polarization independence. [15][16][17] The effect has also been connected with the description of the cavity plasmons. 18,19 For example, such sub-wavelength grooves (or groove nanocavities) have been recently considered for light trapping, resulting in complete light absorption and strong field enhancement, with the control over the resonance wavelength.…”

Section: Introductionmentioning

confidence: 99%

Explanation of extraordinary transmission on 1-D and 2-D metallic gratings

Fiala

Richter

2015

Photonics, Devices, and Systems VI

View full text Add to dashboard Cite

A rigorous numerical analysis is performed in order to discuss and reveal mechanisms responsible for the extraordinary transmission through 1-D and 2-D sub-wavelength arrays of infinite slits and holes, respectively. The investigation is mainly focused on the influence of structural parameters on the resonant enhancements of optical response in the sub-wavelength region. Zero-order transmission maps are calculated in the array periodicity and slit/hole filling factor plane where a behaviour of the existing modes can be clearly resolved. The effect of metallic film thickness is also considered. Identification of mode resonances playing a significant role in the EOT process is verified by studying the corresponding field profiles. It is found that for TE polarization in the case of 1-D periodic metallic array, the TE fundamental mode plays a significant role in the enhanced energy transfer, however, for TM polarization, TEM modes are responsible for energy transfer through one-dimensional infinite slits. Together with waveguide / cavity resonances investigation, surface plasmon-polariton excitations are studied, and their contribution is discussed in the connection to the enhanced transmission. For the case of 2-D array, map of modes, based on the propagation constants and the coefficients of attenuation, is constructed in order to identify the group of those modes strongly contributing to the EOT. Importantly, metal is not considered as a perfect conductor.

show abstract

Section: Introductionmentioning

confidence: 99%

Explanation of extraordinary transmission on 1-D and 2-D metallic gratings

Fiala

Richter

2015

Photonics, Devices, and Systems VI

View full text Add to dashboard Cite

show abstract

“…The transmittance maximum is produced by the excitation of a CM (Fig. 4(c)), consisting of light channeled through the grating slits [27,28]. grating has a period of 628 nm and the gold height is 290 nm.…”

Section: A Simulation Resultsmentioning

confidence: 99%

“…The resist was soft baked at 180°C on a hot plate for 10 min. Then we performed an electron beam lithography (EBL) [27] step using a JEOL EB6300FS EBL system operating at 100 keV, with 2 nA current, up to a dose of 800 μC∕cm 2 during the exposure. The exposed pattern was corrected to prevent proximity effects by using Layout BEAMER software from GenISys GmbH.…”

Section: B Grating Fabricationmentioning

confidence: 99%

See 1 more Smart Citation

Development of a complete plasmonic grating-based sensor and its application for self-assembled monolayer detection

et al. 2014

Self Cite

View full text Add to dashboard Cite

This work presents an integrated plasmonic biosensing device consisting of a one-dimensional metallic lamellar grating designed to exploit extraordinary transmission of light toward an underlying silicon photodetector. By means of finite element simulations, the grating parameters have been optimized to maximize the light transmission variation induced by the functionalization of the gold nanostructures. An optimized grating was fabricated using an electron beam process and an optoelectronic test bench suitable for sample tests was developed. A clear difference in the grating transmitted light due to surface functionalization was observed in presence of TM polarized illumination.

show abstract

“…This means that the EOT only can be achieved for TM wave. However, in recent years, the possibility of EOT for TE wave was also achieved not only by theories and numerical calculations [13][14][15][16][17] but also by experiments [17,18]. And some researchers even achieved the realization of the EOT through one configuration both for TM wave and TE wave at a same wavelength [19][20][21].…”

Section: Introductionmentioning

confidence: 99%