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Proceedings Paper

Fabrication of microlens arrays on soda-lima glasses with a Nd:YVO4 laser
Author(s): Daniel Nieto; M. Teresa Flores-Arias; Gerard M. O'Connor; Carlos Gómez-Reino
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Paper Abstract

We present a laser direct-write technique that is capable of providing microlens arrays on soda-lime glass substrate from one step ablation process, permitting one to shorten the typical times of microlens fabrication with other direct-writing techniques. The technique is based on the combination of a Q-switched Nd:YVO4 laser and a galvanometer system for addressing the output beam laser. The geometrical and optical parameters of the microlenses have been measured to characterize the microlens arrays produced on an area of 2 mm×2 mm. Focal length values around 118 μm have been obtained by measuring the sag and the diameter of the microlens with a confocal microscope (nondirect method) or directly, using a microscope objective with a CCD camera. The practicality of both methods is shown in the good agreement between the obtained results for the focal length of microlenses. By using a noncontact profilometer, the surface roughness of the microlens has been measured and compared with that of a glass substrate.

Paper Details

Date Published: 26 July 2011
PDF: 6 pages
Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 80010Q (26 July 2011); doi: 10.1117/12.891809
Show Author Affiliations
Daniel Nieto, Univ. de Santiago (Spain)
National Univ. of Ireland (Ireland)
M. Teresa Flores-Arias, Univ. de Santiago (Spain)
Gerard M. O'Connor, National Univ. of Ireland (Ireland)
Carlos Gómez-Reino, Univ. de Santiago (Spain)

Published in SPIE Proceedings Vol. 8001:
International Conference on Applications of Optics and Photonics
Manuel Filipe Costa, Editor(s)

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