Scientific Results

A \”low-deformation mirror\” micro-oscillator with ultra-low optical and mechanical losses

Year: 2012

Authors: Serra E., Borrielli A., Cataliotti F. S., Marin F., Marino F., Pontin A., Prodi G. A., Bonaldi M.

Autors Affiliation: Interdisciplinary Laboratory for Computational Science (LISC), FBK-University of Trento, I-38123 Povo (TN), Italy; Istituto Nazionale di Fisica Nucleare (INFN), Gruppo Collegato di Trento, I-38123 Povo (TN), Italy; Institute of Materials for Electronics and Magnetism, Nanoscience-Trento-FBK Division, I-38123 Povo (TN), Italy; Dipartimento di Energetica, Università di Firenze, Via Santa Marta 3, I-50139 Firenze, Italy; European Laboratory for Non-Linear Spectroscopy (LENS), Via Carrara 1, I-50019 Sesto Fiorentino (FI), Italy; INFN, Sezione di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy; Dipartimento di Fisica, Università di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy; CNR-Istituto dei Sistemi Complessi, Via Madonna del Piano 10, I-50019 Sesto Fiorentino (FI), Italy; Dipartimento di Fisica, Università di Trento, I-38123 Povo (TN), Italy

Abstract: We report on the mechanical losses measured in a \”low-deformation mirror\” micro-oscillator designed to reduce as much as possible the strain in the coating layer and the resulting energy dissipation. The deposition of the highly reflective coating layer has been fully integrated in the micro-machining process. We measured at cryogenic temperature a mechanical quality factor up to 10(5) and an optical finesse of about 4 x 10(4), and simulations show that the device can manage input powers of a few mW at 4.2 K. These features make the device very promising for quantum optics experiments. (C) 2012 American Institute of Physics.


Volume: 101 (7)      Pages from: 071101  to: 071101

More Information: We acknowledge the support from the MEMS2 joint project of the Istituto Nazionale di Fisica Nucleare and Fondazione Bruno Kessler. A.B. acknowledges support from the European Research Council under the European Community\’s Seventh Framework Programme (FP7/2007-2013)/ERC Grant Agreement No. 202680.
KeyWords: micro-mirrors; optomechanics; quantum-noise reduction; radiation pressure; optomechanics
DOI: 10.1063/1.4745510

Citations: 21
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