Beam-width-dependent filtering properties of strong volume holographic gratings
| Autor: | Frank Havermeyer, Hung-Te Hsieh, Christophe Moser, Wenhai Liu, Demetri Psaltis |
|---|---|
| Předmět: |
Physics
Diffraction Beam diameter business.industry Materials Science (miscellaneous) Plane wave Holography Physics::Optics Industrial and Manufacturing Engineering law.invention Wavelength Optics law Reflection (physics) Monochromatic color Business and International Management business Beam (structure) Caltech Library Services |
| Popis: | The finite dimension of the incident beam used to read out volume holographic gratings has interesting effects on their filtering properties. As the readout beam gets narrower, there is more deviation from the ideal response predicted for monochromatic plane waves. In this paper we experimentally explore beam-width-dependent phenomena such as wavelength selectivities, angular selectivities, and diffracted beam profiles. Volume gratings in both reflection and transmission geometries are investigated near 1550 nm. Numerical simulations utilizing the technique of Fourier decomposition provide a satisfactory explanation and confirm that the spread of spatial harmonics is the main contributing factor. © 2006 Optical Society of America. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|