Photopolarimeter based on two gratings recorded in thin organic films
| Autor: | Clementina Provenzano, Gabriella Cipparrone, Alfredo Mazzulla |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Diffraction
Materials science Holographic grating business.industry Materials Science (miscellaneous) Holography Physics::Optics Grating POLARIZATION HOLOGRAPHIC GRATINGS Diffraction efficiency Industrial and Manufacturing Engineering law.invention CHAIN AZOBENZENE POLYESTERS Ultrasonic grating Optics LIGHT law Blazed grating Optoelectronics Business and International Management business Diffraction grating |
| Zdroj: | Applied optics 45 (2006): 3929–3934. doi:10.1364/AO.45.003929 info:cnr-pdr/source/autori:Provenzano, C; Cipparrone, G; Mazzulla, A/titolo:Photopolarimeter based on two gratings recorded in thin organic films/doi:10.1364%2FAO.45.003929/rivista:Applied optics/anno:2006/pagina_da:3929/pagina_a:3934/intervallo_pagine:3929–3934/volume:45 |
| DOI: | 10.1364/AO.45.003929 |
| Popis: | A photopolarimeter based on two different kinds of diffraction gratings (a two-grating photopolarimeter) has been developed for real-time measurements of the four elements of the Stokes vector. The main elements of the device are a pure polarization grating and an ordinary transmission grating, both recorded by means of holographic techniques in thin films of organic materials. The first one consists of a diffraction grating recorded by two interfering opposite circularly polarized beams in a Langmuir-Blodgett film of an azo-compound material. The second component is a grating recorded by two interfering parallel circularly polarized beams in a thin film of a photosensitive polymer. Both gratings offer long time stability and good diffraction efficiency. Four photodiodes collect the first-order diffracted beams from these gratings, the output signals of which are read through an analog-to-digital converter by a PC. The optical alignment of the device is easy and the calibration is realized in a one-step procedure. (c) 2006 Optical Society-of America. |
| Databáze: | OpenAIRE |
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