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Optomechanical Cooling in an Optical...

Timalsina, Rupak.

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Optomechanical Cooling in an Optical Fiber.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Optomechanical Cooling in an Optical Fiber./
Author:	Timalsina, Rupak.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	73 p.
Notes:	Source: Masters Abstracts International, Volume: 81-12.
Contained By:	Masters Abstracts International81-12.
Subject:	Applied physics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27963311
ISBN:	9798607329785

Optomechanical Cooling in an Optical Fiber.
Timalsina, Rupak.

Optomechanical Cooling in an Optical Fiber. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 73 p.

Source: Masters Abstracts International, Volume: 81-12.

Thesis (M.S.)--Northern Arizona University, 2020.

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

We demonstrate laser cooling in an optical fiber for the first time by harnessing Brillouin scattering, an effect produced by the interaction of light and acoustic phonons. To realize this physics, we utilize a carbon disulde liquid-core optical fiber (LCOF). These fibers have a number of important features that enable Brillouin cooling including single-mode operation for light, large Brillouin coupling and tight confinement of acoustic waves within the fiber core. Using heterodyne detection, we perform an experimental investigation of the spontaneous backward Brillouin scattering in an LCOF, revealing the thermal population and effective decay rates of phonons participating in the Stokes and anti-Stokes processes. Our measurements show that increasing pump power depletes the thermal population of anti- Stokes phonons while increasing the population of Stokes phonons, in addition to revealing pump power-induced changes to the Brillouin-active phonon decay rates. Optomechanical cooling is revealed through the peak height and linewidth for both Stokes and anti-Stokes processes. Our results demonstrate cooling of traveling-wave anti-Stokes phonons by 60K from room temperature. This thesis work shows that optomechanical cooling can be achieved within an optical fiber without an optical cavity or discrete acoustic modes.

ISBN: 9798607329785Subjects--Topical Terms:

3343996
Applied physics.
Subjects--Index Terms:

Optomechanical cooling

Optomechanical Cooling in an Optical Fiber.
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245 1 0 $a Optomechanical Cooling in an Optical Fiber.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 73 p.
500 $a Source: Masters Abstracts International, Volume: 81-12.
500 $a Advisor: Behunin, Ryan.
502 $a Thesis (M.S.)--Northern Arizona University, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a We demonstrate laser cooling in an optical fiber for the first time by harnessing Brillouin scattering, an effect produced by the interaction of light and acoustic phonons. To realize this physics, we utilize a carbon disulde liquid-core optical fiber (LCOF). These fibers have a number of important features that enable Brillouin cooling including single-mode operation for light, large Brillouin coupling and tight confinement of acoustic waves within the fiber core. Using heterodyne detection, we perform an experimental investigation of the spontaneous backward Brillouin scattering in an LCOF, revealing the thermal population and effective decay rates of phonons participating in the Stokes and anti-Stokes processes. Our measurements show that increasing pump power depletes the thermal population of anti- Stokes phonons while increasing the population of Stokes phonons, in addition to revealing pump power-induced changes to the Brillouin-active phonon decay rates. Optomechanical cooling is revealed through the peak height and linewidth for both Stokes and anti-Stokes processes. Our results demonstrate cooling of traveling-wave anti-Stokes phonons by 60K from room temperature. This thesis work shows that optomechanical cooling can be achieved within an optical fiber without an optical cavity or discrete acoustic modes.
590 $a School code: 0391.
650 4 $a Applied physics. $3 3343996
650 4 $a Optics. $3 517925
650 4 $a Acoustics. $3 879105
653 $a Optomechanical cooling
653 $a Optical fiber
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690 $a 0752
690 $a 0986
710 2 $a Northern Arizona University. $b Physics and Astronomy. $3 2049743
773 0 $t Masters Abstracts International $g 81-12.
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791 $a M.S.
792 $a 2020
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27963311