Particular cases of hypergeometric laser beams in optical micromanipulation
V.V. Kotlyar, A.A. Kovalev, R.V. Skidanov, S.N. Khonina
Full text of article: Russian language.
Abstract:
We derive explicit analytical expressions to describe paraxial light beams that represent a particular case of the hypergeometric (HyG) laser beams [J.Opt.Soc.Am.A, v.25, p.262-270 (2008)]. Among these are modified quadratic Bessel-Gaussian (mQBG) beams, hole Gaussian optical vortices (HGOV), modified elegant Laguerre-Gaussian beams (meLG), and gamma-hypergeometric (gHyG) beams. Using e-beam microlithography, a binary diffractive optical element capable of producing near-HyG beams is synthesized. Theory and experiment are in sufficient agreement. A possibility of rotating dielectric microparticles in the bright diffraction ring of the HyG beam is experimentally demonstrated.
Key words:
hypergeometric beam, hypergeometric mode, diffractive optical element, optical rotation of dielectric microparticles, confluent function (Kummer function), logarithmic axicon.
Citation: Kotlyar VV, Kovalev AA, Skidanov RV, Khonina SN. Particular cases of hypergeometric laser beams in optical micromanipulation. Computer Optics 2008; 32(2): 180-6.
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