Light-beat measurements of second-order space-time correlation in the transmittance of a fluctuating medium
| Autor: | Kazuyoshi Itoh, Yoshiaki Yamabayashi, Budi Santoso, Yoshihiro Ohtsuka |
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| Rok vydání: | 2010 |
| Předmět: |
Photocurrent
Physics business.industry Materials Science (miscellaneous) Detector Physics::Optics Beat (acoustics) Photodetector Optical polarization Industrial and Manufacturing Engineering Optics Transmittance Light beam Business and International Management business In-phase and quadrature components |
| Zdroj: | Applied optics. 20(8) |
| ISSN: | 1559-128X |
| Popis: | A method is proposed for measurements of the second-order space–time correlation in the transmittance of a given fluctuating medium. Three kinds of light-beat photocurrent are produced by the use of some optical polarization components and two photodetectors. Correlational processing of these currents by an electronic correlator offers two correlation outputs in phase quadrature from which the correlation of concern can be constructed. The measurements of its modulus and phase are assured by simulation experiments using a thermally turbulent atmosphere in an optical heterodyne interferometer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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