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Spatial-frequency spectrum analysis of the performance of diffractive optical element for beam smoothing

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In this paper, based on the spatial-frequency spectrum, the intensity distribution of diffractive optical elements (DOE) for beam smoothing is quantitatively analyzed. Two parameters, with which the performance of the DOE can be reliably evaluated, are re-defined. The performances of the designed DOEs for beam smoothing are re-calculated, whether the fine design is adopted or not. The results show that true beam smoothing can be realized with the fine design.
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Keywords: Spatial-frequency spectrum; beam smoothing; diffractive optical element; fine design

Document Type: Original Article

Affiliations: State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing, China, 100084

Publication date: 2002-07-01

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