Phase-map measurements by interferometry with sinusoidal phase modulation and four integrating-buckets - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the Optical Society of America. A, Optics and image science Année : 2001

Phase-map measurements by interferometry with sinusoidal phase modulation and four integrating-buckets

Résumé

Phase-shifting interferometry based on the integrating-bucket technique with sinusoidal phase modulation is studied theoretically and demonstrated experimentally to obtain phase maps from double-beam interferometers. The method uses four frames obtained by integration of the time-varying intensity in an interference pattern during the four quarters of the modulation period. An optimum sinusoidal phase modulation is found to minimize the effect of the additive noise. The absolute accuracy of the phase measurements is discussed. Possible applications of the method are demonstrated with two interference microscopes with which the phase modulation is achieved by sinusoidal oscillation of a mirror attached to a piezoelectric transducer and by sinusoidal birefringence modulation with a photoelastic modulator. In both experimental arrangements, phase images can be produced in real time at a rate of several hertz. Noise measurements are reported and compared with theory.
Fichier principal
Vignette du fichier
JOSA_A_2001.pdf (561.16 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-00533180 , version 1 (27-01-2012)

Identifiants

  • HAL Id : hal-00533180 , version 1

Citer

Arnaud Dubois. Phase-map measurements by interferometry with sinusoidal phase modulation and four integrating-buckets. Journal of the Optical Society of America. A, Optics and image science, 2001, 18, pp.1972. ⟨hal-00533180⟩
131 Consultations
1285 Téléchargements

Partager

Gmail Facebook X LinkedIn More