자료유형  

 학위논문

Control Number  

0016932694

International Standard Book Number  

9798379841041

Dewey Decimal Classification Number  

530

Main Entry-Personal Name  

Wilkey, Andrew.

Publication, Distribution, etc. (Imprint  

[S.l.] : Purdue University., 2021

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2021

Physical Description  

1 online resource(128 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-01, Section: B.

General Note  

Advisor: Vemuri, Gautam;Joglekar, Yogesh.

Dissertation Note  

Thesis (Ph.D.)--Purdue University, 2021.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약This research investigates characteristics of PT (parity-time) symmetry breaking in a system of two optically-coupled, time-delayed semiconductor lasers. A theoretical rate equation model for the lasers' electric fields is presented and then reduced to a 2x2 Hamiltonian model, which, in the absence of time-delay, is PT-symmetric. The important parameters we control are the temporal separation of the lasers (τ ), the frequency detuning (∆ω), and the coupling strength (κ). The detuning is experimentally controlled by varying the lasers' temperatures, and intensity vs. ∆ω behavior are examined, specifically how the PT-transition and the period and amplitude of sideband intensity oscillations change with κ and τ . Experiments are compared to analytic predictions and numerical results, and all are found to be in good agreement. Eigenvalues, eigenvectors, and exceptional points of the reduced Hamiltonian model are numerically and analytically investigated, specifically how nonzero delay affects existing exceptional points.

Subject Added Entry-Topical Term  

Phase transitions.

Subject Added Entry-Topical Term  

Eigenvalues.

Subject Added Entry-Topical Term  

Lasers.

Subject Added Entry-Topical Term  

Eigenvectors.

Subject Added Entry-Topical Term  

Asymmetry.

Subject Added Entry-Topical Term  

Symmetry.

Subject Added Entry-Topical Term  

Mathematics.

Subject Added Entry-Topical Term  

Optics.

Added Entry-Corporate Name  

Purdue University.

Host Item Entry  

Dissertations Abstracts International. 85-01B.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:641523