Send to

Choose Destination
See comment in PubMed Commons below
Opt Lett. 1991 Mar 1;16(5):282-4.

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

Author information

  • 1Research Institute of Electrical Communication, Tohoku University, Sendai 980, Japan.


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 microm. 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.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Loading ...
    Support Center