Diffraction Properties Of Holograms Recorded In DMP-128

Abstract

Unslanted diffraction gratings were recorded in a new phase hologram recording material, DMP-128, under development at Polaroid Corporation. The diffraction efficiency of the resulting gratings was measured as a function of reconstruction angle and compared to results calculated from an "eigenmode" analysis. Good agreement between experiment and theory was observed. Exceptionally large (0.08) changes in the refractive index were produced by moderate (15mj/cm²) exposures of DMP-128, with no evidence of saturation of the index change.