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

Yu-Long Tang; Jinfu Niu; Yong Yang; Jian-Qiu Xu

doi:10.1117/1.2919782

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1 May 2008 Beam collimation of high-power laser diode array with graded-index fiber lens array

Yu-Long Tang, Jinfu Niu, Yong Yang, Jian-Qiu Xu

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Optical Engineering, 47(5), 054202 (2008). https://doi.org/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.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Yu-Long Tang, Jinfu Niu, Yong Yang, and 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). https://doi.org/10.1117/1.2919782

Published: 1 May 2008

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