Infrared holograms have been recorded in real-time at 10.6 tm with a CW CO2 laser beam using poly(acrylic acid)
fims as recording medium. Holographic surface relief gratings with large depth modulation have been formed on
those fihns. Holographic reconstruction at a wavelength of 632.8 nm has given high diffraction efficiencies.
Holographic characteristics of the recording medium such as diffraction efficiency as a function of exposure and
spatial frequency are presented in this paper. The results of an experiment conducted to observe deformations in Ge
windows are also presented.
Rene M. Beaulieu,
Roger A. Lessard,
"Infrared holography on poly(acrylic acid) films", Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); doi: 10.1117/12.406382; https://doi.org/10.1117/12.406382