13 August 1993 Design of compact Fourier transform lenses using substrate-mode holographic elements
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Abstract
A method for designing and recording Fourier transform holographic lenses, in the presence of a recording-readout wavelength shift, using a substrate-mode holographic doublet, is presented. The system is composed of two holographic optical elements (HOEs) which were recorded on the same plate. The first one couples the various spatial frequencies of the input into plane waves which are trapped inside the plate by total internal reflection. The second HOE focuses the collimated waves into the Fourier plane. Since the chromatic dispersion of the first hologram can be corrected by the dispersion of the second hologram, this system is much less sensitive to source wavelength shifts. The method is illustrated with a compact system, recorded at 458 nm and reconstructed at 633 nm. Near diffraction limited performance and a comparatively low chromatic sensitivity over a wide field of view has been obtained.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yaakov Amitai, Silviu Reinhorn, M. Kroch, Asher A. Friesem, "Design of compact Fourier transform lenses using substrate-mode holographic elements", Proc. SPIE 1972, 8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine, (13 August 1993); doi: 10.1117/12.151098; https://doi.org/10.1117/12.151098
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