title: Precise measurement of laser power using an optomechanical system.
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 (1σ) is achievable.
authors: Kazuhiro
authors: K
authors: Agatsuma
authors: Daniel
authors: D
authors: Friedrich
authors: Stefan
authors: S
authors: Ballmer
authors: Giulia
authors: G
authors: DeSalvo
authors: Shihori
authors: S
authors: Sakata
authors: Erina
authors: E
authors: Nishida
authors: Seiji
authors: S
authors: Kawamura
mesh_terms: D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000295:instrumentation*; D007834:Lasers; D007909:Lenses; D008365:Manometry / Q000295:instrumentation; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation*; D009991:Oscillometry / Q000295:instrumentation*; D011874:Radiometry / Q000295:instrumentation*