title: Bottle beam from a bare laser for single-beam trapping.
abstract: We demonstrate that a laser beam converging from a specific transverse mode is a bottle beam, as described in J. Opt. Soc. Am. B 20, 1220 (2003). To our knowledge, this is the first time that a bottle beam has been generated directly from a laser. By calculating the radiation forces on a dielectric Rayleigh sphere in the bottle beam, we show that the single beam can trap high-refractive-index particles at the multiple axial sites of intensity maxima, and it can confine low-index particles on a transverse plane within the bottle regions. Such a novel laser beam may have other applications.
authors.affiliation: National Center for High-Performance Computing, 21 Nan-ke Third Road, Hsin-shi, Tainan County 744, Taiwan.
authors.forename: Ching-Hsu
authors.initials: CH
authors.lastname: Chen
authors.forename: Po-Tse
authors.initials: PT
authors.lastname: Tai
authors.forename: Wen-Feng
authors.initials: WF
authors.lastname: Hsieh