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Wavelength Conversion through Plasmo...

Turan, Deniz.

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Wavelength Conversion through Plasmon-Coupled Surface States.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Wavelength Conversion through Plasmon-Coupled Surface States./
Author:	Turan, Deniz.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	103 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
Contained By:	Dissertations Abstracts International82-12B.
Subject:	Electromagnetics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28545013
ISBN:	9798516916274

Wavelength Conversion through Plasmon-Coupled Surface States.
Turan, Deniz.

Wavelength Conversion through Plasmon-Coupled Surface States. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 103 p.

Source: Dissertations Abstracts International, Volume: 82-12, Section: B.

Thesis (D.Env.)--University of California, Los Angeles, 2021.

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

Surface states generally degrade semiconductor device performance by raising the charge injection barrier height, introducing localized trap states, inducing surface leakage current, and altering the electric potential. Therefore, there has been an endless effort to use various surface passivation treatments to suppress the undesirable impacts of the surface states. During my doctoral studies, I have investigated the unique electrochemical characteristics of semiconductor surface states and showed that the giant built-in electric field created by the surface states can be harnessed to enable passive wavelength conversion with unprecedented efficiencies without utilizing any nonlinear optical phenomena. Photo-excited surface plasmons are coupled to the surface states to generate an electron gas, which is routed to a nanoantenna array through the giant electric field created by the surface states. The induced current on the nanoantennas, which contains mixing product of different optical frequency components, generates radiation at the beat frequencies of the incident photons. We utilize the unprecedented functionalities of plasmon-coupled surface states to demonstrate passive wavelength conversion of nano-joule optical pulses at a 1550 nm center wavelength to terahertz regime with record-high efficiencies that exceed nonlinear optical methods by 4-orders of magnitude. The presented scheme can be used for optical wavelength conversion to different parts of the electromagnetic spectrum ranging from microwave to far-infrared regimes by using appropriate optical beat frequencies.

ISBN: 9798516916274Subjects--Topical Terms:

3173223
Electromagnetics.
Subjects--Index Terms:

Photoconductive terahertz sources

Wavelength Conversion through Plasmon-Coupled Surface States.
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500 $a Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
500 $a Advisor: Jarrahi, Mona.
502 $a Thesis (D.Env.)--University of California, Los Angeles, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Surface states generally degrade semiconductor device performance by raising the charge injection barrier height, introducing localized trap states, inducing surface leakage current, and altering the electric potential. Therefore, there has been an endless effort to use various surface passivation treatments to suppress the undesirable impacts of the surface states. During my doctoral studies, I have investigated the unique electrochemical characteristics of semiconductor surface states and showed that the giant built-in electric field created by the surface states can be harnessed to enable passive wavelength conversion with unprecedented efficiencies without utilizing any nonlinear optical phenomena. Photo-excited surface plasmons are coupled to the surface states to generate an electron gas, which is routed to a nanoantenna array through the giant electric field created by the surface states. The induced current on the nanoantennas, which contains mixing product of different optical frequency components, generates radiation at the beat frequencies of the incident photons. We utilize the unprecedented functionalities of plasmon-coupled surface states to demonstrate passive wavelength conversion of nano-joule optical pulses at a 1550 nm center wavelength to terahertz regime with record-high efficiencies that exceed nonlinear optical methods by 4-orders of magnitude. The presented scheme can be used for optical wavelength conversion to different parts of the electromagnetic spectrum ranging from microwave to far-infrared regimes by using appropriate optical beat frequencies.
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653 $a Surface plasmon waves
653 $a Terahertz generation
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