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Experimental and Theoretical Investigations of Subluminal and Superluminal Lasers for Precision Metrology.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Experimental and Theoretical Investigations of Subluminal and Superluminal Lasers for Precision Metrology./
Author:	Zhou, Zifan.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	167 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-10, Section: B.
Contained By:	Dissertations Abstracts International82-10B.
Subject:	Electrical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28319289
ISBN:	9798597062679

Experimental and Theoretical Investigations of Subluminal and Superluminal Lasers for Precision Metrology.
Zhou, Zifan.

Experimental and Theoretical Investigations of Subluminal and Superluminal Lasers for Precision Metrology. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 167 p.

Source: Dissertations Abstracts International, Volume: 82-10, Section: B.

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

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

Lasers and optical resonators have been widely utilized in precision metrological devices, such as gyroscopes, accelerometers, and gravitational wave detectors. To meet the requirements for a variety of applications, both of the slow light effect and the fast light effect have been applied to the lasers and optical resonators to modify or improve their performances. The subluminal laser and the superluminal laser are defined as the laser with slow light effect and fast light effect inside their cavities, respectively. Here we mainly explore the approaches for realizing subluminal lasers and superluminal lasers and investigate their characteristics.In this thesis, several different schemes for realizing subluminal laser and superluminal laser are investigated experimentally and theoretically. To establish the tool that is developed and utilized for simulating the behavior of the lasers, the theoretical model and the general procedure of the laser simulations are discussed in detail. To demonstrate and explain the approaches and the algorithms, a laser with an artificial 4-level gain medium is adopted and solved using such method.The subluminal lasers are experimentally and theoretically proven to be spectrally stable. Two approaches for realizing the subluminal laser, the diode-pumped alkali laser (DPAL) with Raman gain and Raman laser, are presented and discussed. Besides the conventional property of the subluminal laser, several unnoticed characteristics of such lasers are discovered and analyzed in the later part of the thesis. In the DPAL with Raman gain approach, an unusual phenomenon, multiple solutions to the laser frequency, is observed and discussed. In the Raman laser approach, we observed a strong correlation between the Raman pump and the Raman probe. To investigate such behavior, different methods are utilized to match the experiment data.The superluminal laser is the active version of the white light cavity (WLC). Similar to the WLC, the output frequency of a superluminal laser is more sensitive to the cavity length perturbation than that of an empty cavity. Here, the Raman laser with Raman depletion and EIT in Raman laser are presented and discussed. The Raman laser with Raman depletion approach requires four pump lasers for producing a single directional superluminal laser. However, its operation condition is not strictly limited, and the sensitivity enhancement is experimentally observed to be more than 103. The EIT in Raman laser is a newly discovered approach. The most advantage of this approach is that only two pump lasers are required, which greatly reduces the complexity of the system.Lastly, a passive cavity with an approach for measuring the sensitivity of lasers and resonators are investigated. Such sensitivity measurement reduces the complexity of the experiments and can be applied to subluminal lasers and superluminal lasers. Therefore, it is necessary to establish the foundation in a relatively simple scheme.

ISBN: 9798597062679Subjects--Topical Terms:

596380
Electrical engineering.
Subjects--Index Terms:

Fast light

Experimental and Theoretical Investigations of Subluminal and Superluminal Lasers for Precision Metrology.
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100 1 $a Zhou, Zifan. $0 (orcid)0000-0002-3047-937X $3 1372516
245 1 0 $a Experimental and Theoretical Investigations of Subluminal and Superluminal Lasers for Precision Metrology.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 167 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-10, Section: B.
500 $a Advisor: Shahriar, Selim M.
502 $a Thesis (Ph.D.)--Northwestern University, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Lasers and optical resonators have been widely utilized in precision metrological devices, such as gyroscopes, accelerometers, and gravitational wave detectors. To meet the requirements for a variety of applications, both of the slow light effect and the fast light effect have been applied to the lasers and optical resonators to modify or improve their performances. The subluminal laser and the superluminal laser are defined as the laser with slow light effect and fast light effect inside their cavities, respectively. Here we mainly explore the approaches for realizing subluminal lasers and superluminal lasers and investigate their characteristics.In this thesis, several different schemes for realizing subluminal laser and superluminal laser are investigated experimentally and theoretically. To establish the tool that is developed and utilized for simulating the behavior of the lasers, the theoretical model and the general procedure of the laser simulations are discussed in detail. To demonstrate and explain the approaches and the algorithms, a laser with an artificial 4-level gain medium is adopted and solved using such method.The subluminal lasers are experimentally and theoretically proven to be spectrally stable. Two approaches for realizing the subluminal laser, the diode-pumped alkali laser (DPAL) with Raman gain and Raman laser, are presented and discussed. Besides the conventional property of the subluminal laser, several unnoticed characteristics of such lasers are discovered and analyzed in the later part of the thesis. In the DPAL with Raman gain approach, an unusual phenomenon, multiple solutions to the laser frequency, is observed and discussed. In the Raman laser approach, we observed a strong correlation between the Raman pump and the Raman probe. To investigate such behavior, different methods are utilized to match the experiment data.The superluminal laser is the active version of the white light cavity (WLC). Similar to the WLC, the output frequency of a superluminal laser is more sensitive to the cavity length perturbation than that of an empty cavity. Here, the Raman laser with Raman depletion and EIT in Raman laser are presented and discussed. The Raman laser with Raman depletion approach requires four pump lasers for producing a single directional superluminal laser. However, its operation condition is not strictly limited, and the sensitivity enhancement is experimentally observed to be more than 103. The EIT in Raman laser is a newly discovered approach. The most advantage of this approach is that only two pump lasers are required, which greatly reduces the complexity of the system.Lastly, a passive cavity with an approach for measuring the sensitivity of lasers and resonators are investigated. Such sensitivity measurement reduces the complexity of the experiments and can be applied to subluminal lasers and superluminal lasers. Therefore, it is necessary to establish the foundation in a relatively simple scheme.
590 $a School code: 0163.
650 4 $a Electrical engineering. $3 596380
650 4 $a Optics. $3 595336
653 $a Fast light
653 $a Laser gyroscopes
653 $a Light-atom interaction
653 $a Raman effect
653 $a Slow light
653 $a Precision metrology
653 $a Subluminal lasers
653 $a Superluminal lasers
690 $a 0544
690 $a 0752
710 2 $a Northwestern University. $b Electrical and Computer Engineering. $3 1186892
773 0 $t Dissertations Abstracts International $g 82-10B.
790 $a 0163
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28319289