Precise Measurement of Laser Power using an Optomechanical System
Instrumentation and Detectors
2014-01-28 v2 General Relativity and Quantum Cosmology
Optics
Abstract
This paper shows a novel method to precisely measure the laser power using an optomechanical system. By measuring a mirror displacement caused by the reflection of an amplitude modulated laser beam, the number of photons in the incident continuous-wave laser can be precisely measured. We have demonstrated this principle by means of a prototype experiment uses a suspended 25 mg mirror as an mechanical oscillator coupled with the radiation pressure and a Michelson interferometer as the displacement sensor. A measurement of the laser power with an uncertainty of less than one percent (1 sigma) is achievable.
Cite
@article{arxiv.1309.4779,
title = {Precise Measurement of Laser Power using an Optomechanical System},
author = {Kazuhiro Agatsuma and Daniel Friedrich and Stefan Ballmer and Giulia DeSalvo and Shihori Sakata and Erina Nishida and Seiji Kawamura},
journal= {arXiv preprint arXiv:1309.4779},
year = {2014}
}
Comments
18 pages, 11 figures, published in Optics Express