Generation of closely located light spots using specular Airy laser beams
Khonina S.N., Porfirev A.P., Fomchenkov S.A., Larkin A.S., Savelyev-Trofimov A.B.


Image Processing Systems Institute оf RAS, – Branch of the FSRC “Crystallography and Photonics” RAS, Samara, Russia,
Samara National Research University, Samara, Russia,

Lomonosov Moscow State University, Moscow, Russia

Full text of article: Russian language.


DOI: 10.18287/2412-6179-2017-41-5-661-669

Pages: 661-669.

We conduct a comparative numerical study of the formation of closely located light spots in the focal plane of diffraction gratings and binary optical elements matched with Hermite-Gaussian modes and specular Airy beams. It is shown that while gratings allow a set of  uniform focal spots to be generated with high accuracy, the resulting pattern quickly deteriorates when displaced from the focal plane. Due to their modal properties, Hermite-Gaussian beams are low-sensitive to defocusing, but produce focal spots different in size and intensity. Specular Airy beams offer a trade-off solution - they produce a more uniform intensity pattern of light spots than the Hermite-Gaussian modes, at the same time showing a lower sensitivity to defocusing. Experiments with a tunable laser have confirmed the above-mentioned advantages of the specular Airy beams in comparison with the Hermite-Gaussian modes, also showing good spectral stability of the manufactured diffraction optics.

focusing into a set of light spots, diffractive optical element, Hermite-Gaussian modes, specular Airy beams, depth of focus, chromatic dispersion.

Khonina SN, Porfirev AP, Fomchenkov SA, Larkin AS, Savelyev-Trofimov AB. Generation of closely located light spots using specular Airy laser beams. Computer Optics 2017; 41(5): 661-669. DOI: 10.18287/2412-6179-2017-41-5-661-669.


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