Analysis of optical properties of nanowires using surface integral equations and the multilevel fast multipole algorithm

Date

2016-07-28

Author

Yılmaz, Akıf
Karaosmanoglu, Barıscan
Ergül, Özgür Salih

Metadata

Show full item record

Item Usage Stats

107
views

0
downloads

We present fast and accurate analysis of nanowires at opti-cal frequencies. Plasmonic properties are investigated viathe Lorentz-Drude model, where the metals are consid-ered as penetrable bodies with negative permittivity values.Surface integral equations are used to formulate scatteringand transmission problems, while strongly negative per-mittivity values bring computational challenges. A modi-fied combined tangential formulation is developed and usedfor accurate solutions of transmission problems involvingnanowires. Also a modified version of the multilevel fastmultipole algorithm (MLFMA) is employed for accelerat-ing numerical solutions, where quickly decaying interac-tions are dropped for improving the efficiency. Numericalexamples are presented to demonstrate the capabilities ofthe developed implementation.

URI

https://hdl.handle.net/11511/86402
http://aesconference.org/files/aes16_proceedings.pdf

Conference Name

AES 2016 SYMPOSIUM, 26 – 28 JULY 2016

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Investigation of Alternative Array Configurations of Nanowires for Maximum Power Transmission at Optical Frequencies Karaosmanoglu, Bariscan; Satana, Hasan Aykut; Dikmen, Fatih; Ergül, Özgür Salih (2017-07-14) We present a computational analysis and comparison of nanowire arrays for efficient transmission of electromagnetic power at optical frequencies. A reliable simulation environment involving the multilevel fast multipole algorithm for fast iterative solutions of surface integral equations is used to accurately compute field intensity and power density values in the vicinity of nanowires in diverse configurations. The results demonstrate favorable properties of honeycomb structures that can provide efficient ...
Design and analysis of ultrashort femtosecond laser amplifiers Doğan, Ersin; Bilikmen, Kadri Sinan; Department of Physics (2006) This thesis presents a compact femtosecond laser amplifier design for optical preamplifiers and power amplifiers consist of theoretical perspective, simulations to analyze and optimize beam performance. The propagation through optical media is simulated for every optical component such as mirrors and nonlinear crystal separately and suggested realignment of these components required increasing amplifier performance. Finally Gaussian beam propagation and aberration compensation has been conducted.
Design and Analysis of Nanoantenna Arrays for Imaging and Sensing Applications at Optical Frequencies Isiklar, Goktug; Cetin, Isa Can; Algun, Mustafa; Ergül, Özgür Salih (2019-01-01) We present computational analysis of nanoantenna arrays for imaging and sensing applications at optical frequencies. Arrays of metallic nanoantennas are considered in an accurate simulation environment based on surface integral equations and the multilevel fast multipole algorithm developed for plasmonic structures. Near-zone responses of the designed arrays to nearby nanoparticles are investigated in detail to demonstrate the feasibility of detection. We show that both metallic and dielectric nanoparticles...
Design and realization of broadband instantaneous frequency discriminator Pamuk, Gökhan; Yıldırım, Nevzat; Department of Electrical and Electronics Engineering (2010) n this thesis, RF sections of a multi tier instantaneous frequency measurement (IFM) receiver which can operate in 2 – 18 GHz frequency band is designed, simulated and partially realized. The designed structure uses one coarse tier, three medium tiers and one fine tier for frequency discrimination. A novel reflective phase shifting technique is developed which enables the design of very wideband phase shifters using stepped cascaded transmission lines. Compared to the classical phase shifters using coupled ...
Assessment of large format InP/InGaAs quantum well infrared photodetector focal plane array Ozer, S; Cellek, OO; Beşikci, Cengiz (Elsevier BV, 2005-10-01) We report the fabrication and characteristics of large format (640 x 512) InP/In0.53Ga0.47As long wavelength infrared (LWIR) quantum well infrared photodetector (QWIP) focal plane array (FPA). The FPA, which is hybridized to a read-out integrated circuit having a charge capacity of 1.1 x 10(7) electrons, yielded a mean noise equivalent temperature difference (NETD) of similar to 40 mK at a cold finger temperature as high as 77 K. The performance of the FPA, being comparable to that of AlGaAs/GaAs QWIP FPAs,...

Citation Formats

A. Yılmaz, B. Karaosmanoglu, and Ö. S. Ergül, “Analysis of optical properties of nanowires using surface integral equations and the multilevel fast multipole algorithm,” Malaga, 2016, p. 1, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/86402.