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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 2 — Jan. 27, 2014
  • pp: 2013–2030

Precise measurement of laser power using an optomechanical system

Kazuhiro Agatsuma, Daniel Friedrich, Stefan Ballmer, Giulia DeSalvo, Shihori Sakata, Erina Nishida, and Seiji Kawamura  »View Author Affiliations

Optics Express, Vol. 22, Issue 2, pp. 2013-2030 (2014)

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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 (1σ) is achievable.

© 2014 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(120.4880) Instrumentation, measurement, and metrology : Optomechanics

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: September 19, 2013
Revised Manuscript: November 14, 2013
Manuscript Accepted: December 14, 2013
Published: January 23, 2014

Kazuhiro Agatsuma, Daniel Friedrich, Stefan Ballmer, Giulia DeSalvo, Shihori Sakata, Erina Nishida, and Seiji Kawamura, "Precise measurement of laser power using an optomechanical system," Opt. Express 22, 2013-2030 (2014)

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