Abstract

A method for designing microlens arrays that inherently takes into account application requirements and fabrication constraints is presented. Elements with numerical apertures of up to 0.5 have been designed and fabricated by laser beam writing in photoresist and replication in plastic material. In a laser-diode-to-fiber array coupling experiment, an overall optical throughput of 60% was achieved. By means of anamorphic microlens arrays, correction of the laser-diode longitudinal astigmatism and circularization of the image-plane irradiance distribution are demonstrated.

© 1995 Optical Society of America

Astigmatic gradient-index elements for laser-diode collimation and beam shaping

S. Sinzinger, K.-H. Brenner, J. Moisel, T. Spick, and M. Testorf
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Refractive and diffractive properties of planar micro-optical elements

M. Rossi, R. E. Kunz, and H. P. Herzig
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Design and fabrication of diffractive microlens arrays with continuous relief for parallel laser direct writing

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