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Optical Engineering

Beam collimation of high-power laser diode array with graded-index fiber lens array
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Paper Abstract

Graded-index (GRIN) fiber lens arrays are fabricated from commercial GRIN fibers to collimate a high-power laser diode array. The beam divergence angles are reduced to 4.2 and 14.7 mrad in the fast and slow axes, respectively. The influences of smile and fluctuation in fiber length are discussed. Using an aspherical focal lens system, about 74% power can be launched into a fiber with a numerical aperture (NA) of 0.22 and a core diameter of 400 μm.

Paper Details

Date Published: 1 May 2008
PDF: 4 pages
Opt. Eng. 47(5) 054202 doi: 10.1117/1.2919782
Published in: Optical Engineering Volume 47, Issue 5
Show Author Affiliations
Yu-Long Tang, Shanghai Institute of Optics and Fine Mechanics (China)
Jinfu Niu, Shanghai Institute of Optics and Fine Mechanics (China)
Yong Yang, Shanghai Institute of Optics and Fine Mechanics (China)
Jian-Qiu Xu, Shanghai Institute of Optics and Fine Mechanics (China)


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