We report fabrication and characterization of photodarkening-suppressed highly Yb-doped step-index fibers. The fiber contains 2.9wt% of Yb and has background loss of ~10dB/km. The fiber generates >100 W laser output power with 75% slope efficiency.
© 2018 The Author(s)
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
Login to access OSA Member Subscription