Methods of designing and fabricating an equilateral triangle beam splitter

John G. Smith; Andrew Stockham

doi:10.1117/12.735829

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2 October 2007 Methods of designing and fabricating an equilateral triangle beam splitter

John G. Smith, Andrew Stockham

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Proceedings Volume 6663, Laser Beam Shaping VIII; 66630F (2007) https://doi.org/10.1117/12.735829
Event: Photonic Devices + Applications, 2007, San Diego, California, United States

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.

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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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