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Proceedings Paper

Holographic optical system design using Super-Oslo
Author(s): Rongsheng Tian; Charles S. Ih; K. Q. Lu
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Paper Abstract

It is becoming more common to include HOE's in an optical system. This imposes some important problems for optical designers. In this paper, we will mainly discuss analyses and evaluations of an optical system which contains general HOE's and only describe briefly the generation of the HOE. A general HOE can be defined as a hologram whose object beam can assume any arbitrary wavefront. The general approach, by all known commercial softwares, is to model the required hologram being formed with simple spherical waves. The wavefront of the object wave is then modified by a phase function represented by a high order polynomials. The coefficients are then optimize to achieve the required results. This is adequate for most applications. If the required hologram does not resemble simple spherical waves nor has the symmetry, a large number of terms may be needed for an accurate representation. Our approach is to use exact ray-tracing to represent a general hologram. This was carried out with a commercial software, Super-Oslo, which, by the way, has not yet incorporated the phase modification feature. Since the Super Oslo can accommodate multiple configurations and also since it has the Star Command Language (SCL), we can either use a separate configuration or dynamically change the main configuration to define the hologram. The hologram itself is a user defined surface for which you can write your own program. Therefore the definition of the hologram can include any optical surfaces which can be handled by the software. The hologram can also be on any surface as long as you can write the program for it. The system design, analysis and evaluation can then be run by the SCL. We will use the Holographic Optical Head (HOH) as our example. The HOH includes two spherical lenses and two holograms.

Paper Details

Date Published: 1 May 1990
PDF: 9 pages
Proc. SPIE 1211, Computer and Optically Formed Holographic Optics, (1 May 1990);
Show Author Affiliations
Rongsheng Tian, Univ. of Delaware (United States)
Charles S. Ih, Univ. of Delaware (United States)
K. Q. Lu, Univ. of Delaware (United States)

Published in SPIE Proceedings Vol. 1211:
Computer and Optically Formed Holographic Optics
Ivan Cindrich; Sing H. Lee, Editor(s)

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