Abstract

If an elementary hologram with grating vector K is recorded in a photosensitive material, the complex refractive index is modulated with the same spatial frequency K. A beam-coupling measurement is a proper tool for simultaneous investigation of the absorption grating and the refractive-index grating, which correspond to the imaginary and the real parts of the complex refractive-index modulation, respectively. Using beam-coupling analysis makes it possible to determine the magnitude of the refractive index and the absorption grating as well as their phase shift with respect to the writing intensity pattern, with one single-beam-coupling measurement. The theoretical foundation of beam-coupling analysis is given. A few numerical examples point out the main characteristic of beam-coupling analysis.

© 1993 Optical Society of America

Separate and simultaneous investigation of absorption gratings and refractive-index gratings by beam-coupling analysis: comment

Martin Fally
J. Opt. Soc. Am. A 23(10) 2662-2663 (2006)

Analysis of hybrid holographic gratings by thin-grating decomposition method

Hiroyuki Ichikawa, Jari Turunen, and Mohammad R. Taghizadeh
J. Opt. Soc. Am. A 10(6) 1176-1183 (1993)

Holographic diffraction in photoanisotropic organic materials

Tizhi Huang and Kelvin H. Wagner
J. Opt. Soc. Am. A 10(2) 306-315 (1993)

Comparisons of coupled-dipole solutions and dipole refractive indices for light scattering and absorption by arbitrarily shaped or agglomerated particles

Jerry C. Ku
J. Opt. Soc. Am. A 10(2) 336-342 (1993)

Scattering by quasi-gratings and space-frequency coupling

M. Saillard and D. Maystre
J. Opt. Soc. Am. A 10(3) 502-508 (1993)