Share Email Print
cover

Proceedings Paper

Confined-doped ytterbium fibers for beam quality improvement: fabrication and performance
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

By confining the Yb doping within a smaller radius in the center of the core of the few-mode large-mode-area fiber, the fundamental mode, which overlaps better with the Yb ions, sees higher gain than the higher order modes, and dominates the output. Hence, improved beam quality can be achieved. A confined-doped fiber with 41/395μm core/cladding diameters is fabricated by Direct Nanoparticle Deposition (DND) process. The fiber is characterized in an amplified spontaneous emission (ASE) source setup. Near-diffraction-limited beam quality (M2~1.3) is experimentally demonstrated.

Paper Details

Date Published: 16 February 2012
PDF: 7 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 823737 (16 February 2012); doi: 10.1117/12.906371
Show Author Affiliations
Changgeng Ye, nLIGHT Corp., Lohja (Finland)
Aalto Univ. School of Electrical Engineering (Finland)
Joona Koponen, nLIGHT Corp., Lohja (Finland)
Teemu Kokki, nLIGHT Corp., Lohja (Finland)
Joan Montiel i Ponsoda, Aalto Univ. School of Electrical Engineering (Finland)
Ari Tervonen, Aalto Univ. School of Electrical Engineering (Finland)
Seppo Honkanen, Aalto Univ. School of Electrical Engineering (Finland)
Univ. of Eastern Finland (Finland)


Published in SPIE Proceedings Vol. 8237:
Fiber Lasers IX: Technology, Systems, and Applications
Eric C. Honea; Sami T. Hendow, Editor(s)

© SPIE. Terms of Use
Back to Top