1 May 2008 Beam collimation of high-power laser diode array with graded-index fiber lens array
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Optical Engineering, 47(5), 054202 (2008). doi:10.1117/1.2919782
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.
Yu-Long Tang, Jinfu Niu, Yong Yang, Jian-Qiu Xu, "Beam collimation of high-power laser diode array with graded-index fiber lens array," Optical Engineering 47(5), 054202 (1 May 2008). http://dx.doi.org/10.1117/1.2919782
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KEYWORDS
Collimation

GRIN lenses

Microlens

Diodes

High power lasers

Graded index fibers

Fiber couplers

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