Impedance-matching surface plasmon absorber for FDTD siumulation

Author

Chao, ChienChang ; Wang, ChihMing ; Chang, JengYang

Author_Institution

Dept. of Opt. & Photonics, Nat. Central Univ., Jhongli, Taiwan

fYear

2009

fDate

2-4 June 2009

Firstpage

1

Lastpage

2

Abstract

The perfectly matched layer (PML) is used to be excellent boundary in the finite-difference time-domain method (FDTD), but is failure to absorb surface plasmon (SP) directly. In order to absorbing the incident SP at the end on a metal surface, an impedance-matching layer (IML) is implemented between scattered SP and PML. A very low SP reflection of -28.69 dB is achieved by an IML with length of lambda/3. The IML significantly reduces the reflected SP without significantly increasing the simulation area and creates a quasi-infinite regime for SP propagation.

Keywords

finite difference time-domain analysis; gold; impedance matching; metallic thin films; surface plasmons; FDTD simulation; finite-difference time-domain method; impedance-matching layer; metal surface; perfectly matched layer; surface plasmon absorber; Computational modeling; Finite difference methods; Frequency; Optical reflection; Optical scattering; Optical surface waves; Perfectly matched layers; Plasmons; Surface impedance; Time domain analysis; (200.4740) Optical processing; (240.6680) Surface plasmons;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on

Conference_Location

Baltimore, MD

Print_ISBN

978-1-55752-869-8

Electronic_ISBN

978-1-55752-869-8

Type

conf

Filename

5226059