25 November 1993 Fabrication of planar gradient index cylindrical microlenses and their application to laser diode collimation
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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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Torsten Possner, Torsten Possner, Rolf Goering, Rolf Goering, } "Fabrication of planar gradient index cylindrical microlenses and their application to laser diode collimation", Proc. SPIE 2000, Current Developments in Optical Design and Optical Engineering III, (25 November 1993); doi: 10.1117/12.163663; https://doi.org/10.1117/12.163663
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