Optical trapping of microscopic metal particles

Shunichi Sato, Yasunori Harada, Yoshio Waseda

Research output: Contribution to journalArticlepeer-review

151 Citations (Scopus)


The optical trapping of microscopic metal particles with a fixed Nd:YAG laser beam of TEM00 and TEM010 modes is demonstrated. Three kinds of metal particles (bronze, silver, and gold) used in the experiments were trapped two-dimensionally only when the laser beam focus was located near the bottom of the particle. Consideration of a simple model on the basis of ray optics indicates that a fixed single beam itself can produce a force that will pull the particle into the beam axis. A linear focal pattern also was applied to trap several particles simultaneously.

Original languageEnglish
Pages (from-to)1807-1809
Number of pages3
JournalOptics Letters
Issue number22
Publication statusPublished - 1994 Nov 15


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