Writing and reading of reflection gratings in films of an azo side-group polymer are reported. The gratings were induced holographically by use of an argon-ion laser at 488 nm. The measured diffraction efficiency was in the range 2–10%. To estimate the scattering of the reflected light within the material, we further characterized the gratings by calculating a characteristic transmission. A distinct minimum for this transmission was observed, which was redshifted farther from the writing wavelength for gratings written in 50-µm polymer samples.
© 2001 Optical Society of America
H. J. Eichler, S. Orlic, R. Schulz, and J. Rübner, "Holographic reflection gratings in azobenzene polymers," Opt. Lett. 26, 581-583 (2001)