Three-dimensional optical trapping and laser ablation of a single polymer latex particle in water

Hiroaki Misawa*, Masanori Koshioka, Keiji Sasaki, Noboru Kitamura, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

177 Scopus citations

Abstract

We developed a laser trapping-ablation system comprised of CW and pulsed Nd3+:YAG lasers as well as of an optical microscope. Three-dimensional manipulation of various kinds of particles and laser ablation of a single optically trapped, poly(methyl methacrylate) latex particle in water were demonstrated. A minute hole with its diameter of ∼sub-μm was fabricated on the latex particle (∼6 μm diameter). The hole size produced was much smaller than the effective diameter of the excitation laser beam, suggesting nonlinear optical (self-focusing of the laser beam) and photochemical (multiphoton absorption) mechanisms for the present laser trapping ablation. Characteristic features of the laser trapping-ablation are discussed in detail.

Original languageEnglish
Pages (from-to)3829-3836
Number of pages8
JournalJournal of Applied Physics
Volume70
Issue number7
DOIs
StatePublished - 1 Dec 1991

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