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Title: Near-field focusing of an optical wave by diffraction gratings

Journal Article · · Quantum Electronics (Woodbury, N.Y.)
DOI:https://doi.org/10.1070/QEL16028· OSTI ID:22724601
;  [1]
  1. V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk (Russian Federation)

We report the investigation results for spatially-localised light structures (photonic nanojets) under near-field optical radiation scattering on phase diffraction gratings. Main parameters of photonic nanojets from gratings with sawtooth, rectangular and hemispherical groove profiles are obtained by numerical electrodynamic simulation. It is found that by varying a period, degree of filling, groove shape and parameters of optically contrast coating of the diffraction grating one can control the characteristics of the produced photonic jets in a wide range. (laser beams)

OSTI ID:
22724601
Journal Information:
Quantum Electronics (Woodbury, N.Y.), Vol. 46, Issue 7; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
Country of Publication:
United States
Language:
English