Volume relaxation of quenched silica at room temperature monitored by whispering gallery mode resonance wavelength

Lu Cai, Iwao Teraoka, Yong Zhao

Research output: Contribution to journalArticle

Abstract

We used a resonance wavelength shift of a whispering gallery mode to monitor volume relaxation at room temperature in cylindrical and spherical resonators fabricated by quenching the molten tip of a pure silica optical fiber. The high sensitivity of the method allowed measurement of the linear dimension at sub-ppm resolution. All the resonators registered a volume increase in the first few hours, in agreement with the volume-temperature equilibrium curve of type IV silica below the glass transition temperature. When heating of the fiber was insufficient, the volume increase was greater, ascribed to a larger volume of strained silica. We also formulated thermodynamics to estimate the temperature coefficients of polarizability at constant pressure and at constant density from resonance shift data obtained in experiments performed on relaxed silica resonators.

Original languageEnglish (US)
JournalJournal of Non-Crystalline Solids
DOIs
StateAccepted/In press - 2017

Fingerprint

Whispering gallery modes
whispering gallery modes
Silicon Dioxide
Silica
silicon dioxide
Resonators
Wavelength
room temperature
wavelengths
resonators
Temperature
shift
Molten materials
Optical fibers
Quenching
glass transition temperature
Thermodynamics
Heating
optical fibers
quenching

Keywords

  • Frozen-in strain
  • Quenching
  • Silica
  • Volume relaxation
  • Whispering gallery mode

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

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title = "Volume relaxation of quenched silica at room temperature monitored by whispering gallery mode resonance wavelength",
abstract = "We used a resonance wavelength shift of a whispering gallery mode to monitor volume relaxation at room temperature in cylindrical and spherical resonators fabricated by quenching the molten tip of a pure silica optical fiber. The high sensitivity of the method allowed measurement of the linear dimension at sub-ppm resolution. All the resonators registered a volume increase in the first few hours, in agreement with the volume-temperature equilibrium curve of type IV silica below the glass transition temperature. When heating of the fiber was insufficient, the volume increase was greater, ascribed to a larger volume of strained silica. We also formulated thermodynamics to estimate the temperature coefficients of polarizability at constant pressure and at constant density from resonance shift data obtained in experiments performed on relaxed silica resonators.",
keywords = "Frozen-in strain, Quenching, Silica, Volume relaxation, Whispering gallery mode",
author = "Lu Cai and Iwao Teraoka and Yong Zhao",
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journal = "Journal of Non-Crystalline Solids",
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T1 - Volume relaxation of quenched silica at room temperature monitored by whispering gallery mode resonance wavelength

AU - Cai, Lu

AU - Teraoka, Iwao

AU - Zhao, Yong

PY - 2017

Y1 - 2017

N2 - We used a resonance wavelength shift of a whispering gallery mode to monitor volume relaxation at room temperature in cylindrical and spherical resonators fabricated by quenching the molten tip of a pure silica optical fiber. The high sensitivity of the method allowed measurement of the linear dimension at sub-ppm resolution. All the resonators registered a volume increase in the first few hours, in agreement with the volume-temperature equilibrium curve of type IV silica below the glass transition temperature. When heating of the fiber was insufficient, the volume increase was greater, ascribed to a larger volume of strained silica. We also formulated thermodynamics to estimate the temperature coefficients of polarizability at constant pressure and at constant density from resonance shift data obtained in experiments performed on relaxed silica resonators.

AB - We used a resonance wavelength shift of a whispering gallery mode to monitor volume relaxation at room temperature in cylindrical and spherical resonators fabricated by quenching the molten tip of a pure silica optical fiber. The high sensitivity of the method allowed measurement of the linear dimension at sub-ppm resolution. All the resonators registered a volume increase in the first few hours, in agreement with the volume-temperature equilibrium curve of type IV silica below the glass transition temperature. When heating of the fiber was insufficient, the volume increase was greater, ascribed to a larger volume of strained silica. We also formulated thermodynamics to estimate the temperature coefficients of polarizability at constant pressure and at constant density from resonance shift data obtained in experiments performed on relaxed silica resonators.

KW - Frozen-in strain

KW - Quenching

KW - Silica

KW - Volume relaxation

KW - Whispering gallery mode

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U2 - 10.1016/j.jnoncrysol.2017.09.022

DO - 10.1016/j.jnoncrysol.2017.09.022

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