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Optical Engineering

Focusing diode lasers using a truncated paraboloid with spherical output surface
Author(s): Erkki Lassila; Taito Alahautala; Rolf Hernberg
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Paper Abstract

The effect of a spherical output surface on the performance of a truncated dielectric paraboloid in focusing the light from multiple diode lasers was studied with ray tracing. Especially the effects of the radius and the displacement of the output sphere were investigated. In addition, the performance of a parabolic concentrator with a spherical output surface in high-numerical-aperture focusing of diode laser light was demonstrated experimentally. The 1/e2 diameter of the measured focus was less than 100 μm.

Paper Details

Date Published: 1 May 2007
PDF: 5 pages
Opt. Eng. 46(5) 054301 doi: 10.1117/1.2734993
Published in: Optical Engineering Volume 46, Issue 5
Show Author Affiliations
Erkki Lassila, Tampere Univ. of Technology (Finland)
Taito Alahautala, Tampere Univ. of Technology (Finland)
Rolf Hernberg, Tampere Univ. of Technology (Finland)

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