東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Coherent population trapping in real...

Wong, Vincent Kwok Huei.

Linked to FindBook

Google Book

Amazon

博客來

Coherent population trapping in real and artificial atoms.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Coherent population trapping in real and artificial atoms./
Author:	Wong, Vincent Kwok Huei.
Description:	149 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6458.
Contained By:	Dissertation Abstracts International65-12B.
Subject:	Physics, Optics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3156838
ISBN:	9780496176595

Coherent population trapping in real and artificial atoms.
Wong, Vincent Kwok Huei.

Coherent population trapping in real and artificial atoms. - 149 p.

Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6458.

Thesis (Ph.D.)--University of Rochester, 2005.

In this thesis, coherent population trapping (CPT) is studied in two real-world systems: atomic sodium vapor and a quantum well structure. A series of spectroscopic studies were carried out in the atomic system to understand how CPT behaves in a non-idealized environment. In addition, a feasibility study is carried out to seek a solid state environment to facilitate the design of practical devices based on the process of CPT.

ISBN: 9780496176595Subjects--Topical Terms:

1018756
Physics, Optics.

Coherent population trapping in real and artificial atoms.
LDR:03192nmm 2200325 4500 001 1820754
005 20061103104525.5
008 130610s2005 eng d
020 $a 9780496176595
035 $a (UnM)AAI3156838
035 $a AAI3156838
040 $a UnM $c UnM
100 1 $a Wong, Vincent Kwok Huei. $3 1909964
245 1 0 $a Coherent population trapping in real and artificial atoms.
300 $a 149 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-12, Section: B, page: 6458.
500 $a Supervisor: Robert W. Boyd.
502 $a Thesis (Ph.D.)--University of Rochester, 2005.
520 $a In this thesis, coherent population trapping (CPT) is studied in two real-world systems: atomic sodium vapor and a quantum well structure. A series of spectroscopic studies were carried out in the atomic system to understand how CPT behaves in a non-idealized environment. In addition, a feasibility study is carried out to seek a solid state environment to facilitate the design of practical devices based on the process of CPT.
520 $a The first system used to study CPT is sodium vapor (the "real atom"). Even though sodium is a multi-level system, the spectral features and the parameters that govern them are found to be similar to those of the idealized three-level Λ system. For example, in both the idealized model and the actual atomic system, the ground state decoherence rate determines the width of the resonance as is demonstrated experimentally. The inclusion of Doppler broadening and propagation effects, and the impurities in the vapor, are found to weaken the strength of the CPT resonance. The presence of additional levels, which can either be virtual or real, permits additional concurrent processes to occur that enrich the spectrum. These concurrent processes are coherent Raman scattering, other wave mixing processes, crossover resonances, and optical pumping. Coherent Raman scattering can even invert the induced transparency feature of CPT into an induced absorption feature.
520 $a In spite of these complications, CPT has great potential for technologically advanced applications, with the example of frequency conversion being demonstrated here. As a medium for these applications, semiconductor systems are more practical than atomic sodium.
520 $a The second system studied is a quantum well structure (the "artificial atom"), designed to mimic a Λ configuration suited for observing CPT. Novel use of various aspects of band engineering and structure design is utilized to achieve such a configuration. An AlAsSb/InGaAs/AlGaAsSb ternary-quaternary alloy system is used to create an Island well structure. By employing intersubband transitions only within the conduction band, a single carrier-type system is achieved. It is predicted that CPT can still be observed even with the added complexity of this semiconductor system.
590 $a School code: 0188.
650 4 $a Physics, Optics. $3 1018756
650 4 $a Physics, Atomic. $3 1029235
650 4 $a Physics, Condensed Matter. $3 1018743
690 $a 0752
690 $a 0748
690 $a 0611
710 2 0 $a University of Rochester. $3 515736
773 0 $t Dissertation Abstracts International $g 65-12B.
790 1 0 $a Boyd, Robert W., $e advisor
790 $a 0188
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3156838