Generation of highly confined optical bottle beams by exploiting the photonic nanojet effect

We report on the generation of photonic nanojets, which resemble optical bottle beams. They are realized by manipulating the illumination of dielectric microspheres. As illumination we use the outer region of deliberately truncated Bessel-Gauss beam or a focused Gaussian beam with intentionally induced spherical aberrations. For the Bessel-Gauss beam possessing a single side lobe only, the nanojet spot resembles an optical bottle beam with a strong confinement due to the nanojet effect. When multiple side lobes of the aberrated focal spot are used, a chain of 3D optical bottle beams appears. We show the 3D intensity distributions close to the spot and discuss the main characteristics of such optical bottle beams.


Published in:
Proceedings of SPIE, 8274, 82740U-1
Presented at:
SPIE Photonics West, San Francisco, California, January 21-26, 2012
Year:
2012
Publisher:
SPIE Digital Library, Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa
ISSN:
1996-756X
Keywords:
Laboratories:




 Record created 2012-03-09, last modified 2018-09-13

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