17 June 1994 Optical design and testing of a holographic projection system
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Abstract
Design and preliminary results of a prototype laser projection system are presented. This system consists of a HeCd laser, an expansion system, a laser beam profile reshaping system, and a holographic diffraction grating which divides the amplitude of a laser into four coherent beams. These four beams are then recombined together to generate an interferometric pattern on a photosensitive substrate. In this paper, the particular significance of the reshaper with respective enhancement of system performance will be addressed. Since most laser beam irradiance profiles do not have a uniform distribution of light intensity across its diameter, the interference pattern will have the maximum intensity at the center and will trail off at the edges if a Gaussian beam profile is utilized. In order to correct this problem, a two plano- aspherical lens system has been designed and fabricated. This system converts the Gaussian beam into a uniform profile beam without truncating the laser beam. Experimental results will be given and discussed.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wu Jiang, Wu Jiang, David L. Shealy, David L. Shealy, Kenneth M. Baker, Kenneth M. Baker, } "Optical design and testing of a holographic projection system", Proc. SPIE 2152, Diffractive and Holographic Optics Technology, (17 June 1994); doi: 10.1117/12.178077; https://doi.org/10.1117/12.178077
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