Coherent cancellation of photothermal noise in GaAs/Al0.92Ga0.08As Bragg mirrors

Autor(en)

Tara Chalermsongsak, Evan D. Hall, Garrett D. Cole, David Follman, Frank Seifert, Koji Arai, Eric K. Gustafson, Joshua R. Smith, Markus Aspelmeyer, Rana X. Adhikari

Abstrakt

Thermal noise is a limiting factor in many high-precision optical experiments. A search is underway for novel optical materials with reduced thermal noise. One such pair of materials, gallium arsenide and aluminum-alloyed gallium arsenide (collectively referred to as AlGaAs), shows promise for its low Brownian noise when compared to conventional materials such as silica and tantala. However, AlGaAs has the potential to produce a high level of thermo-optic noise. We have fabricated a set of AlGaAs crystalline coatings, transferred to fused silica substrates, whose layer structure has been optimized to reduce thermo-optic noise by inducing coherent cancellation of the thermoelastic and thermorefractive effects. By measuring the photothermal transfer function of these mirrors, we find evidence that this optimization has been successful.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

California Institute of Technology (Caltech), Thorlabs Crystalline Solutions, U.S. Department of Commerce, University of Maryland, College Park, California State University, Fullerton, Crystalline Mirror Solutions GmbH

Journal

Metrologia: international journal of pure and applied metrology

Band

53

Seiten

860-868

Anzahl der Seiten

9

ISSN

0026-1394

DOI

https://doi.org/10.1088/0026-1394/53/2/860

Publikationsdatum

03-2016

Peer-reviewed

Ja

ÖFOS 2012

103021 Optik

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeiner Maschinenbau

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/d3d7c27b-f591-494e-ba39-f347fe6210c3