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2 October 2007 Methods of designing and fabricating an equilateral triangle beam splitter
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Abstract
It is commonly known that a diffractive optic can be designed to split an incoming beam into many spots or orders to produce various shapes and patterns. A desire to produce an equilateral triangle in the far-field for applications such as ophthalmology surgery, topographical LIDAR mapping, and in material processing is an interesting case where there are multiple design choices. In this paper, we will present grayscale and binary approaches of a corner cube array and hexagonal phase plate that produce an equilateral triangle in the far-field with equal amount of energy in each of the three spots. An efficiency analysis will be presented showing various results obtained using scalar wave theory versus a rigorous coupled wave analysis.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John G. Smith and Andrew Stockham "Methods of designing and fabricating an equilateral triangle beam splitter", Proc. SPIE 6663, Laser Beam Shaping VIII, 66630F (2 October 2007); https://doi.org/10.1117/12.735829
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