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Proceedings Paper

Refractive microlens array integration with linear high-power semiconductor laser array
Author(s): Qingle Tang
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Paper Abstract

It is a relatively simple and effective method to incorporate a monolithic refractive microlens array with a linear high power semiconductor laser array. The refractive microlens array of a corresponding periodicity behaves as optical collimating lens and is used to collimate the highly divergent beam out of the semiconductor laser array. Just a few papers were reported for the use of diffractive and refractive microlens to improve the performance of diode lasers. This paper describes the design and analysis of the refractive cylinder microlens array, and the integration of a linear semiconductor laser array and a refractive cylinder microlens array with different sag and diameter. The theoretical results and computer simulation show that the refractive cylinder microlens array can be effectively used to collimate the light beam out of semiconductor lasers from several tens of degrees to several tens of mrad. The major challenge is the accurate profile control of refractive cylinder microlens, good optical coupling between semiconductor lasers and refractive microlens array, and the critical alignment of lasers and microlens array.

Paper Details

Date Published: 31 August 1999
PDF: 5 pages
Proc. SPIE 3879, Micromachine Technology for Diffractive and Holographic Optics, (31 August 1999); doi: 10.1117/12.360522
Show Author Affiliations
Qingle Tang, Huazhong Research Institute of Electro-Optical Technology (China)

Published in SPIE Proceedings Vol. 3879:
Micromachine Technology for Diffractive and Holographic Optics
Sing H. Lee; J. Allen Cox, Editor(s)

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