Holo-Scanner Technique for Wideband Recording.
Final rept. May-Dec 73,
CBS LABS STAMFORD CONN
Pagination or Media Count:
The report describes the analysis, experimental development, and test of the new HoloFacet TM scanning technique for high speed optical scanning and recording of 100 lpmm at 100 MHz on a high resolution photographic film. The HoloFacet scanning technique employs the rotation of a HoloFacet within a coherent optical field, such that the resulting diffracted waves are scanned across a film surface as a succession of rapidly moving focal points. The HoloFacets are applied by well-developed holographic means to a surface which reduces the optical perturbation of the high speed system. The report also describes the transformation of the brassboard holographic scanner into a recorder, for the purpose of yielding an output on a strip of photographic film permitting the analysis of the characteristics of wideband holograph recording, such as focusing accuracy, and tolerances. A 100 lpmm was recorded on Type 3414 film at 33 MTF with a video bandwidth of 100 MHz and a canner speed of 52,000 rpm. Modified author abstract