Work

Beam magnification and the efficiency of optical trapping with 790-nm AlGaAs laser diodes

Year: 1994

Type: article

Abstract: The efficiency of dielectric particle confinement with 790 nm AlGaAs laser diode optical traps is investigated as a function of beam magnification and polarization state. When an anamorphic prism pair is used to correct for diode beam ellipticity, trapping efficiencies of nearly 0.37 are achieved with a magnification factor of 3×, laser powers of 4-18 mW, and an overfilled microscope objective entrance aperture. Results are compared for diodes having small (8 μm) and large (57 μm) astigmatisms, but comparable far-field divergence angles.

Source: IEEE Photonics Technology Letters

DOI: 10.1109/68.285553

Authors: G.J. Escandon, Y. Liu, G.J. Sonek, M.W. Berns

Institutions: University of California, Irvine, Beckman Laser Institute and Medical Clinic

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2169641907

FWCI: 0.734

Cites: 6

Cited by: 7

Related to: 10