TY - JOUR
T1 - Oxyfluoride Core Silica-Based Optical Fiber with Intrinsically Low Nonlinearities for High Energy Laser Applications
AU - Cavillon, Maxime
AU - Kucera, Courtney J.
AU - Hawkins, T. Wade
AU - Runge, Antoine F.J.
AU - Peacock, Anna C.
AU - Dragic, Peter D.
AU - Ballato, John
N1 - Manuscript received March 24, 2017; revised June 12, 2017 and July 19, 2017; accepted July 21, 2017. Date of publication July 25, 2017; date of current version February 24, 2018. This work was supported in part by the U.S. Department of Defense Joint Technology Office through Contracts W911NF-05-1-0517, FA9550-07-1-0566, W911NF-12-1-0602, FA9451-15-D-0009/0001, and FA9451-15-D-0009/0002 (JB and PD) and in part by the Sirrine Foundation (MC, CJK, TWH, and JB). (Corresponding author: Maxime Cavillon.) M. Cavillon, C. J. Kucera, T. W. Hawkins, and J. Ballato are with the Center for Optical Materials Science and Engineering Technologies and the Department of Materials Science and Engineering, Clemson University, Clem-son, SC 29634 USA (e-mail: [email protected]; [email protected]; [email protected]; [email protected]).
PY - 2018/1/15
Y1 - 2018/1/15
N2 - A few-moded silica-based optical fiber fabricated from core materials that possess intrinsically low optical nonlinearities is reported. Specifically, the 8-μm core, 125-μm cladding diameter silicate fiber was composed of a strontium aluminosilicate oxyfluoride core with a fused silica cladding and was fabricated using the molten core method. Relative to conventional optical fibers, reductions of ∼6.3 dB in Brillouin gain coefficient (gB ), ∼0.9 dB in Raman gain coefficient (gR), and ∼2.2 dB in thermo-optic coefficient were realized as was a 'silica-like' nonlinear refractive index (n2) with a value of ∼3 × 10-20 m2/W. The role of each core material constituent on parameters that drive optical nonlinearities is discussed to provide a materials solution route for low nonlinearity fiber systems. Materially addressing optical nonlinearities represent a simpler and more effective approach to mitigating power-scaling limits in high energy fiber laser systems compared to the geometric approaches employed using microstructured fibers.
AB - A few-moded silica-based optical fiber fabricated from core materials that possess intrinsically low optical nonlinearities is reported. Specifically, the 8-μm core, 125-μm cladding diameter silicate fiber was composed of a strontium aluminosilicate oxyfluoride core with a fused silica cladding and was fabricated using the molten core method. Relative to conventional optical fibers, reductions of ∼6.3 dB in Brillouin gain coefficient (gB ), ∼0.9 dB in Raman gain coefficient (gR), and ∼2.2 dB in thermo-optic coefficient were realized as was a 'silica-like' nonlinear refractive index (n2) with a value of ∼3 × 10-20 m2/W. The role of each core material constituent on parameters that drive optical nonlinearities is discussed to provide a materials solution route for low nonlinearity fiber systems. Materially addressing optical nonlinearities represent a simpler and more effective approach to mitigating power-scaling limits in high energy fiber laser systems compared to the geometric approaches employed using microstructured fibers.
KW - High energy lasers
KW - nonlinear refractive index
KW - optical fiber
KW - stimulated Brillouin scattering
KW - stimulated Raman scattering
KW - thermo-optic coefficient
UR - https://www.scopus.com/pages/publications/85029177384
UR - https://www.scopus.com/pages/publications/85029177384#tab=citedBy
U2 - 10.1109/JLT.2017.2731602
DO - 10.1109/JLT.2017.2731602
M3 - Article
AN - SCOPUS:85029177384
SN - 0733-8724
VL - 36
SP - 284
EP - 291
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 2
M1 - 7993000
ER -