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Proceedings Paper

Fabrication of planar gradient index cylindrical microlenses and their application to laser diode collimation
Author(s): Torsten Possner; Rolf Goering
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Paper Abstract

Using the Ag+-Na+ exchange in a special optical glass one- and two- dimensional refractive index profiles of definite shape have been realized. It is shown that good quality one-dimensional parabolic profiles can be used for micro-cylindrical lens fabrication with high possible numerical aperture N.A. <EQ 0.46. Two-dimensional refractive index gradients of stripe waveguide geometry generated by field assisted ion exchange through a linear mask window form single cylindrical lenses as well as cylindrical lens arrays with comparable low N.A. <EQ 0.15 which can be used for the transformation of the weakly divergent direction of a laser diode or laser diode bars. Two crossed lenses of different numerical aperture are applicable for high power laser diode collimation.

Paper Details

Date Published: 25 November 1993
PDF: 9 pages
Proc. SPIE 2000, Current Developments in Optical Design and Optical Engineering III, (25 November 1993); doi: 10.1117/12.163663
Show Author Affiliations
Torsten Possner, Fraunhofer-Einrichtung fuer Angewandte Optik und Feinmechanik Jena (Germany)
Rolf Goering, Piezosystem Jena GmbH (Germany)

Published in SPIE Proceedings Vol. 2000:
Current Developments in Optical Design and Optical Engineering III
Robert E. Fischer; Warren J. Smith, Editor(s)

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