Optical trapping of small particles using a 1.3-µm compact InGaAsP diode laser

S. Sato, M. Ohyumi, H. Shibata, H. Inaba, Y. Ogawa

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)

Abstract

We describe the noncontact optical trapping of small particles by a single-beam gradient force using a near-infrared InGaAsP diode laser operating at 1.33 μm. The feasibility and reliability of diode-laser trapping was confirmed with polystyrene latex and glass spheres as well as with yeast cells. By moving small particles vertically to the laser beam axis, we measured the horizontal component of the trapping force based on the Stokes law. Thus a linear relationship between the trapping laser power and the horizontal trapping force is demonstrated and compared quantitatively with that for the Ar laser.

Original languageEnglish
Pages (from-to)282-284
Number of pages3
JournalOptics Letters
Volume16
Issue number5
DOIs
Publication statusPublished - 1991 Mar 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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