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Plasmonics and Metasurfaces for Infr...

Farmahini Farahani, Mohsen.

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Plasmonics and Metasurfaces for Infrared Wave Engineering.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Plasmonics and Metasurfaces for Infrared Wave Engineering./
Author:	Farmahini Farahani, Mohsen.
Description:	76 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-08(E), Section: B.
Contained By:	Dissertation Abstracts International75-08B(E).
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3619137
ISBN:	9781303878510

Plasmonics and Metasurfaces for Infrared Wave Engineering.
Farmahini Farahani, Mohsen.

Plasmonics and Metasurfaces for Infrared Wave Engineering. - 76 p.

Source: Dissertation Abstracts International, Volume: 75-08(E), Section: B.

Thesis (Ph.D.)--Northeastern University, 2014.

In this dissertation, we investigate several novel passive components composed of plasmonic materials at infrared regime. As an example for a passive plasmonic component, we present a bandpass filter integrated into a metal-insulator-metal (MIM) waveguide at mid-infrared range. Design techniques already developed in microwave and circuit theory used to realize the filter. The insulator is air and metal parts are silver where their loss considered in our simulations. The filter passband is from 27 THz to 33 THz (9.1 mum to 11.1 mum) and the simulated insertion loss is 1.7 dB. The filter length is 16.9 mum, almost 1.7 times center wavelength (10 mum).

ISBN: 9781303878510Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Plasmonics and Metasurfaces for Infrared Wave Engineering.
LDR:03984nam a2200337 4500 001 1968579
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020 $a 9781303878510
035 $a (MiAaPQ)AAI3619137
035 $a AAI3619137
040 $a MiAaPQ $c MiAaPQ
100 1 $a Farmahini Farahani, Mohsen. $3 2105761
245 1 0 $a Plasmonics and Metasurfaces for Infrared Wave Engineering.
300 $a 76 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-08(E), Section: B.
500 $a Adviser: Hossein Mosallaei.
502 $a Thesis (Ph.D.)--Northeastern University, 2014.
520 $a In this dissertation, we investigate several novel passive components composed of plasmonic materials at infrared regime. As an example for a passive plasmonic component, we present a bandpass filter integrated into a metal-insulator-metal (MIM) waveguide at mid-infrared range. Design techniques already developed in microwave and circuit theory used to realize the filter. The insulator is air and metal parts are silver where their loss considered in our simulations. The filter passband is from 27 THz to 33 THz (9.1 mum to 11.1 mum) and the simulated insertion loss is 1.7 dB. The filter length is 16.9 mum, almost 1.7 times center wavelength (10 mum).
520 $a Then, two bandpass filters operating at 27-33 THz and 36-41 THz bands are integrated with a power splitter to form a frequency diplexer. The performance of the designed diplexer is outstanding in terms of channel isolation (better that 30 dB) and loss. The proposed design method is scalable in the infrared and visible range and can also be used to realize frequency multiplexers.
520 $a In chapter 2, a reflectarray metasurfaces composed of rectangular metallic patches on top of a grounded dielectric layer is presented. The novelty of the reflectarray lies in its polarization dependent reflection angle. The reflection angle can be designed independently for either of the two incoming polarizations.
520 $a We demonstrate a 16lambdax16lambda birefringent reflectarray operating at 8.06 mum wavelength. The array reflects the two orthogonal polarizations into +30º and -30º directions. This birefringent metasurface can be used in polarimetry applications and waveplate working in reflection mode. In chapter 3, the concept of plasmonic graded index material is introduced and investigated. A 15lambdax15lambda graded index metasurface is designed to collimate and steer the power emerging from an aperture into a narrow beam. The graded index pattern is obtained using holography technique. The presented metasurface works at 5.2 mum with fractional bandwidth of 8%. The metasurface steers the beam to theta=30º direction and the Half Power Beam Widths (HPBW) of the beam are 6º and 16º in elevation and azimuth planes, respectively. The graded index metasurface can be used to pattern the aperture of Quantum Cascade Laser (QCL) to enhance its beam collimation.
520 $a In chapter 4, we present a novel subwavelength double-layer unit cell constructed of L-shaped and concentric loop nanoantennas which can independently manipulate the amplitude and phase of an incident wave. The unit cell is made of two layers of scatterers, where the first can tune the amplitude and the second the desired phase. We show that metasurfaces composed of this unit cell can be used to achieve arbitrary transmission amplitude and phase profiles. Furthermore, we illustrate that these metasurfaces along with Fourier Transform (FT) blocks can be used to realize unique Linear Space Invariant (LSI) transfer functions. This approach opens opportunity for light processing on flat platforms.
590 $a School code: 0160.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Physics, Electricity and Magnetism. $3 1019535
650 4 $a Physics, Optics. $3 1018756
690 $a 0544
690 $a 0607
690 $a 0752
710 2 $a Northeastern University. $b Electrical and Computer Engineering. $3 1018491
773 0 $t Dissertation Abstracts International $g 75-08B(E).
790 $a 0160
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3619137