Yb-Doped Pedestal Silica Fiber Through Vapor Phase Doping for Pulsed Laser Applications

This letter describes successful fabrication and detail characterization of ytterbium (Yb)-doped pedestal aluminosilicate fibers through vapor phase doping technique using modified chemical vapor deposition system (MCVD). Fabricated preforms have uniform step-index profiles devoid of any profile rip...

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Bibliographic Details
Published in:IEEE photonics technology letters 2016-05, Vol.28 (9), p.1022-1025
Main Authors: Saha, Maitreyee, Chowdhury, Sourav Das, Shekhar, Nishant Kumar, Pal, Atasi, Pal, Mrinmay, Guha, Chandan, Sen, Ranjan
Format: Article
Language:English
Subjects:
Aluminum oxide
Doping
Fabrication
Fiber lasers
Glass
Optical fiber amplifiers
optical fiber fabrication
Preforms
rare earth compounds
vapor deposition
ytterbium
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Summary:This letter describes successful fabrication and detail characterization of ytterbium (Yb)-doped pedestal aluminosilicate fibers through vapor phase doping technique using modified chemical vapor deposition system (MCVD). Fabricated preforms have uniform step-index profiles devoid of any profile ripples, central dip, and/or core-clad interface defects, which are very common to the preforms made by a solution doping method. Fibers with a pedestal design exhibit good optical properties, low photodarkening-induced losses, high SNR values, and higher efficiencies making them suitable for high-power pulsed laser applications as compared with normal Yb-doped fibers. One of the pedestal fibers has demonstrated the output energy of 186 μJ with the 1.86-W average power. The pulse has a width of 100 ns at a 10-kHz repetition rate, which provides a peak power of 1.86 kW.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2016.2524040