| Autor: |
Murciano, A., Blaya, S., Carretero, L., Acebal, P., Pérez-Molina, M., Madrigal, R. F., Fimia, A. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; Sep2008, Vol. 104 Issue 6, p063109, 10p, 3 Charts, 6 Graphs |
| Abstrakt: |
We theoretically and experimentally analyze the angular selectivity curves of nonuniform gratings recorded in a photopolymerizable silica glass. Due to the rigidity of this material, shrinkage would not cause fringe bending, so we propose that the coupling of the beams at the recording stage (two-wave mixing) produces the resulting nonuniformities. Nonuniform transmission holographic gratings can be analyzed in rigid media using the coupled-wave theory but introducing the results obtained from the two-wave mixing treatment and taking into account the absorption and the nonlinear effects produced by the mechanism of photopolymerization and diffusion. Good agreement between theory and experience is obtained. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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