Complex-envelope alternating-direction-implicit FDTD method for simulating active photonic devices with semiconductor/solid-state media

Gurpreet Singh*, Koustuban Ravi, Qian Wang, Seng-Tiong Ho

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A complex-envelope (CE) alternating-direction-implicit (ADI) finite-difference time-domain (FDTD) approach to treat light-matter interaction self-consistently with electromagnetic field evolution for efficient simulations of active photonic devices is presented for the first time (to our best knowledge). The active medium (AM) is modeled using an efficient multilevel system of carrier rate equations to yield the correct carrier distributions, suitable for modeling semiconductor/solid-state media accurately. To include the AM in the CE-ADI-FDTD method, a first-order differential system involving CE fields in the AM is first set up. The system matrix that includes AM parameters is then split into two time-dependent submatrices that are then used in an efficient ADI splitting formula. The proposed CE-ADI-FDTD approach with AM takes 22% of the time as the approach of the corresponding explicit FDTD, as validated by semiconductor microdisk laser simulations.

Original languageEnglish (US)
Pages (from-to)2361-2363
Number of pages3
JournalOptics Letters
Volume37
Issue number12
DOIs
StatePublished - Jun 15 2012

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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