High quality factor measured in fused silica

Steven D. Penn; Gregory M. Harry; Andri M. Gretarsson; Scott E. Kittelberger; Peter R. Saulson; John J. Schiller; Joshua R. Smith; Sol O. Swords

doi:10.1063/1.1394183

High quality factor measured in fused silica

Steven D. Penn, Gregory M. Harry, Andri M. Gretarsson, Scott E. Kittelberger, Peter R. Saulson, John J. Schiller, Joshua R. Smith, Sol O. Swords

Department of Physics

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

We have measured the mechanical dissipation in a sample of fused silica drawn into a rod. The sample was hung from a multiple-bob suspension, which isolated it from rubbing against its support, from recoil in the support structure, and from seismic noise. The quality factor, Q, was measured for several modes with a high value of 57.1±0.1 million found for the mode number 2 at 726 Hz. This result is about a factor of 2 higher than previous room temperature measurements. The measured Q was strongly dependent on handling, with a pristine flame-polished surface yielding a Q three to four times higher than a surface which had been knocked several times against a copper tube.

Original language	English (US)
Pages (from-to)	3670-3673
Number of pages	4
Journal	Review of Scientific Instruments
Volume	72
Issue number	9
DOIs	https://doi.org/10.1063/1.1394183
State	Published - Sep 2001

ASJC Scopus subject areas

Instrumentation

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10.1063/1.1394183

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title = "High quality factor measured in fused silica",

abstract = "We have measured the mechanical dissipation in a sample of fused silica drawn into a rod. The sample was hung from a multiple-bob suspension, which isolated it from rubbing against its support, from recoil in the support structure, and from seismic noise. The quality factor, Q, was measured for several modes with a high value of 57.1±0.1 million found for the mode number 2 at 726 Hz. This result is about a factor of 2 higher than previous room temperature measurements. The measured Q was strongly dependent on handling, with a pristine flame-polished surface yielding a Q three to four times higher than a surface which had been knocked several times against a copper tube.",

author = "Penn, {Steven D.} and Harry, {Gregory M.} and Gretarsson, {Andri M.} and Kittelberger, {Scott E.} and Saulson, {Peter R.} and Schiller, {John J.} and Smith, {Joshua R.} and Swords, {Sol O.}",

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T1 - High quality factor measured in fused silica

AU - Penn, Steven D.

AU - Harry, Gregory M.

AU - Gretarsson, Andri M.

AU - Kittelberger, Scott E.

AU - Saulson, Peter R.

AU - Schiller, John J.

AU - Smith, Joshua R.

AU - Swords, Sol O.

PY - 2001/9

Y1 - 2001/9

N2 - We have measured the mechanical dissipation in a sample of fused silica drawn into a rod. The sample was hung from a multiple-bob suspension, which isolated it from rubbing against its support, from recoil in the support structure, and from seismic noise. The quality factor, Q, was measured for several modes with a high value of 57.1±0.1 million found for the mode number 2 at 726 Hz. This result is about a factor of 2 higher than previous room temperature measurements. The measured Q was strongly dependent on handling, with a pristine flame-polished surface yielding a Q three to four times higher than a surface which had been knocked several times against a copper tube.

AB - We have measured the mechanical dissipation in a sample of fused silica drawn into a rod. The sample was hung from a multiple-bob suspension, which isolated it from rubbing against its support, from recoil in the support structure, and from seismic noise. The quality factor, Q, was measured for several modes with a high value of 57.1±0.1 million found for the mode number 2 at 726 Hz. This result is about a factor of 2 higher than previous room temperature measurements. The measured Q was strongly dependent on handling, with a pristine flame-polished surface yielding a Q three to four times higher than a surface which had been knocked several times against a copper tube.

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High quality factor measured in fused silica

Abstract

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