University of Illinois Chicago
Browse

Lifetime Of Anharmonic Decay Of Optical Phonons In Confined GaAs Structure

Download (989.69 kB)
thesis
posted on 2017-11-01, 00:00 authored by Kirupavathi Krishnababu
The expression for the lifetime of optical phonons in bulk material has been well researched; however, there aren’t enough estimations for the theoretical lifetime of optical phonons in confined structures. In this paper, the expression for lifetime of a confined optical phonon decaying in to two acoustical phonons in GaAs double heterointerface structures was derived. Using the expression for the displacement of the optical and acoustic phonons in three phonon decay process, the Hamiltonian of the anharmonic decay is calculated. From the Fermi golden rule, the rate of transition and theoretical lifetime of phonon was calculated.

History

Advisor

Stroscio, Michael A

Chair

Stroscio, Michael A

Department

Electrical and computer Engineering

Degree Grantor

University of Illinois at Chicago

Degree Level

  • Masters

Committee Member

Shi, Junxia Vaisband, Inna Partin

Submitted date

August 2017

Issue date

2017-07-28

Usage metrics

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC