Diode-Pumped Narrow Linewidth Multi-kW Metalized Yb Fiber Amplifier
Abstract
].Yb-doped fiber laser has experienced exponential growth over the past decade. The output power of a cw Yb fiber laser is limited by stimulated Raman scattering (SRS), as is evident from [1]. Increasing fiber modal area can overcome SRS limitation but makes the fiber significantly more susceptible to multi-mode instability (MMI) [2], thus degrading the beam quality of the fiber laser output. Fiber laser power can also be extended via beam combining techniques [3].Because beam-combinable fiber amplifier requires narrow linewidth, its power is limited by stimulated Brillouin scattering (SBS). Increasing fiber modal area can overcome SBS limitation but makes the fiber significantly more susceptible to MMI, rendering such fibers unsuitable for beam combining [3
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2016
- Accession Number
- AD1032214
Entities
People
- Charles X. Yu
- Oleg Shatrovoy
- T. Y. Fan
- Thierry Taunay
Organizations
- MIT Lincoln Laboratory