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Room temperature light-matter intera...

Gupta, Shilpi.

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Room temperature light-matter interaction using quantum dots and photonic crystal cavities.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Room temperature light-matter interaction using quantum dots and photonic crystal cavities./
Author:	Gupta, Shilpi.
Description:	84 p.
Notes:	Source: Dissertation Abstracts International, Volume: 75-11(E), Section: B.
Contained By:	Dissertation Abstracts International75-11B(E).
Subject:	Electrical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3628558
ISBN:	9781321046236

Room temperature light-matter interaction using quantum dots and photonic crystal cavities.
Gupta, Shilpi.

Room temperature light-matter interaction using quantum dots and photonic crystal cavities. - 84 p.

Source: Dissertation Abstracts International, Volume: 75-11(E), Section: B.

Thesis (Ph.D.)--University of Maryland, College Park, 2014.

This item is not available from ProQuest Dissertations & Theses.

Control over spontaneous emission is important for many applications in photonics, including efficient light-emitting diodes, photovoltaics, single-photon sources and low-threshold nanolasers. Photonic crystals can modify the spontaneous emission by creating cavities with extremely small mode-volumes, and are an ideal platform for integrated devices because of their scalable planar architecture. For developing photonic devices at room temperature using such cavities, colloidally synthesized quantum dots are excellent emitters because they exhibit high photoluminescence efficiency and emission wavelength tunability.

ISBN: 9781321046236Subjects--Topical Terms:

649834
Electrical engineering.

Room temperature light-matter interaction using quantum dots and photonic crystal cavities.
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020 $a 9781321046236
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035 $a AAI3628558
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100 1 $a Gupta, Shilpi. $3 3176883
245 1 0 $a Room temperature light-matter interaction using quantum dots and photonic crystal cavities.
300 $a 84 p.
500 $a Source: Dissertation Abstracts International, Volume: 75-11(E), Section: B.
500 $a Adviser: Edo Waks.
502 $a Thesis (Ph.D.)--University of Maryland, College Park, 2014.
506 $a This item is not available from ProQuest Dissertations & Theses.
506 $a This item must not be sold to any third party vendors.
520 $a Control over spontaneous emission is important for many applications in photonics, including efficient light-emitting diodes, photovoltaics, single-photon sources and low-threshold nanolasers. Photonic crystals can modify the spontaneous emission by creating cavities with extremely small mode-volumes, and are an ideal platform for integrated devices because of their scalable planar architecture. For developing photonic devices at room temperature using such cavities, colloidally synthesized quantum dots are excellent emitters because they exhibit high photoluminescence efficiency and emission wavelength tunability.
520 $a In this thesis, I present experimental and theoretical work on enhancing light-matter interaction at room temperature, using colloidal quantum dots and nanobeam photonic crystal cavities. Using time-resolved optical spectroscopy, we observed enhanced spontaneous emission rate of the quantum dots coupled to the cavity mode. We also demonstrated saturable absorption of the quantum dots coupled to the cavity mode by pump-intensity dependent cavity-linewidth, which is a nonlinear phenomenon with potential applications in optical switching at room temperature. Using the quantum optics framework, we developed a theoretical model to show that cavity-enhanced spontaneous emission can be used to overcome Auger recombination (an ultrafast nonradiative process that quenches optical gain) in colloidal quantum dots to develop low-threshold nanolasers. In the end, I will also discuss our current efforts towards deterministic deposition of quantum dots on photonic crystal cavities using atomic force microscopy for effective fabrication of quantum dot devices.
590 $a School code: 0117.
650 4 $a Electrical engineering. $3 649834
650 4 $a Optics. $3 517925
650 4 $a Quantum physics. $3 726746
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710 2 $a University of Maryland, College Park. $b Electrical Engineering. $3 1018746
773 0 $t Dissertation Abstracts International $g 75-11B(E).
790 $a 0117
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3628558