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Design of a two-dimensional binary grating for the generation of a given set of diffraction orders

P.A. Glotov, V.V. Kotlyar*

*Image Processing Systems Institute of RAS,

Samara Samara State Aerospace University

 PDF, 393 kB

Pages: 64-69.

Full text of article: Russian language.

Abstract:
Diffraction gratings are used today in various areas of science and technology. Their main characteristics are as follows: efficiency - the percentage of energy getting to the target area, and error - the difference between the resulting intensity distribution and the target one. Amplitude and phase gratings differ from each other, moreover,the efficiency of phase gratings is significantly higher. The theoretical efficiency of phase gratings is approximately 97% for one-dimensional and 94% for two-dimensional [1] gratings. The efficiency of amplitude gratings is only about 50% or less. Phase gratings, in turn, differ in the relief complexity. In our case, the lattice is binary, the easiest one to manufacture. Its relief is produced by one cycle of substrate etching. Binary gratings allow to form only symmetric intensity distributions of diffraction orders.

Citation:
Glotov PA, Kotlyar VV. Design of a two-dimensional binary grating for the generation of a given set of diffraction orders. Computer Optics 2001; 21: 64-69.

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