Enhanced photothermal displacement spectroscopy for thin-film characterization using a Fabry-Perot resonator
arXiv:cond-mat/0310194 · doi:10.1063/1.1728312
Abstract
We have developed a new technique for photothermal displacement spectroscopy that is potentially orders of magnitude more sensitive than conventional methods. We use a single Fabry-Perot resonator to enhance both the intensity of the pump beam and the sensitivity of the probe beam. The result is an enhancement of the response of the instrument by a factor proportional to the square of the finesse of the cavity over conventional interferometric measurements. In this paper we present a description of the technique, and we discuss how the properties of thin films can be deduced from the photothermal response. As an example of the technique, we report a measurement of the thermal properties of a multilayer dielectric mirror similar to those used in interferometric gravitational wave detectors.
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References in corpus (8)
- Thermal noise in interferometric gravitational wave detectors due to dielectric optical coatings
- Thermodynamical fluctuations and photo-thermal shot noise in gravitational wave antennae
- Thermo-refractive noise in gravitational wave antennae
- Thermoelastic effects at low temperatures and quantum limits in displacement measurements
- Thermoelastic dissipation in inhomogeneous media: loss measurements and displacement noise in coated test masses for interferometric gravitational wave detectors
- Thermodynamical fluctuations in optical mirror coatings
- Thermal noise in half infinite mirrors with non-uniform loss: a slab of excess loss in a half infinite mirror
- Experimental measurement of photothermal effect in Fabry-Perot cavities
Cited by in corpus (4)
- Photothermal effects in ultra-precisely stabilized tunable microcavities
- Photothermal and thermo-refractive effects in high reflectivity mirrors at room and cryogenic temperature
- Optical back-action on the photothermal relaxation rate
- Cancellation of photothermally induced instability in an optical resonator