Thermal Control of a Dual Mode Parametric Sapphire Transducer

Thermal Control of a Dual Mode Parametric Sapphire Transducer

We propose a method to control the thermal stability of a sapphire dielectric transducer made with two dielectric disks separated by a thin gap and resonating in the whispering gallery (WG) modes of the electromagnetic field. The simultaneous measurement of the frequencies of both a WGH mode and a W...

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Veröffentlicht in:arXiv.org 2009-12
Hauptverfasser: Belfi, Jacopo, Beverini, Nicolò, De Michele, Andrea, Gabbriellini, Gianluca, Mango, Francesco, Passaquieti, Roberto
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Sprache:eng
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Control stability
Disks
Electromagnetic fields
Equilibrium conditions
Frequency shift
Sapphire
Thermal stability
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creator Belfi, Jacopo
Beverini, Nicolò
De Michele, Andrea
Gabbriellini, Gianluca
Mango, Francesco
Passaquieti, Roberto
description We propose a method to control the thermal stability of a sapphire dielectric transducer made with two dielectric disks separated by a thin gap and resonating in the whispering gallery (WG) modes of the electromagnetic field. The simultaneous measurement of the frequencies of both a WGH mode and a WGE mode allows one to discriminate the frequency shifts due to gap variations from those due to temperature instability. A simple model, valid in quasi equilibrium conditions, describes the frequency shift of the two modes in terms of four tuning parameters. A procedure for the direct measurement of them is presented.
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subjects Control stability
Disks
Electromagnetic fields
Equilibrium conditions
Frequency shift
Sapphire
Thermal stability
title Thermal Control of a Dual Mode Parametric Sapphire Transducer
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