A powerful new approach for the treatment of dispersive media in finite-difference time-domain method

Minghui Han; Robert W. Dutton; Shanhui Fan

doi:10.1117/12.629502

23 August 2005 A powerful new approach for the treatment of dispersive media in finite-difference time-domain method

Minghui Han, Robert W. Dutton, Shanhui Fan

Proceedings Volume 5926, Tuning the Optical Response of Photonic Bandgap Structures II; 59260E (2005) https://doi.org/10.1117/12.629502
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We show here that both the Debye poles and Lorentz pole pairs are special cases of complex-conjugate pole-residue pairs, and the general form of such pairs in fact offers us a much more efficient approach of treating real dispersive media in FDTD than the usual ones that are based on Debye poles and Lorentz pole pairs. We first derive a unified formulation of the auxiliary differential equation method for arbitrary dispersive media by using these pairs. We then use this formulation to perform several numerical experiments, including the permittivity of noble metal Ag and the electroabsorption coefficient of semiconductor quantum wells. The result of these experiments clearly demonstrates the feasibility and advantages of using these pairs in treating dispersive media in FDTD.

Citation Download Citation

Minghui Han, Robert W. Dutton, and Shanhui Fan "A powerful new approach for the treatment of dispersive media in finite-difference time-domain method", Proc. SPIE 5926, Tuning the Optical Response of Photonic Bandgap Structures II, 59260E (23 August 2005); https://doi.org/10.1117/12.629502

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available