Ray-Tracing Approach to Computer-Generated Holography for Precision 3D Beam Patterns
Computer-generated holography [1, 2, 3] is a well known way to produce holograms. It is widely used in integrated optics , for holographic components [5, 6], in medical detection , for image-enhancement in electronic microscopes , and for three-dimensional displays [9, 10]. Most of the computer-generated holograms (CGHs) described in existing papers are Fourier holograms which are generated using the FFT (Fast Fourier Transform) [11, 12]. In this paper, a method which is based on ray tracing is described and demonstrated. This method can encode and reconstruct not only two-dimensional but also three-dimensional objects.
KeywordsReference Beam Efficient Cell Reference Wave Optical Path Difference Object Beam
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