Analysis of Optical Bottle Generation by Coherent Beam Combining

The study evaluates the feasibility of generating a closed optical trap (“optical bottle”) using coherent beam combining. A semi-analytical model, based on paraxial wave optics and truncated Gaussian beam approximation, was employed. Proposed configurations include: (1) simple bifocal tilt, (2) bifocal tilt + polarization switching, (3) bifocal tilt + fractional vortex optical charge number, and (4) bifocal tilts + polarization switching in random shooting target geometries. The trap’s shell resembles inverted “wine glasses” stacked one over the other with azimuthal symmetry producing alternating bright and dark regions. A far field dark region and “bottle stoppers“ intensity variations yield a 30 dB intensity ratio.