Short-length microstructured phosphate glass fiber lasers with large mode areas.
We report fabrication and testing of the first phosphate glass microstructured fiber lasers with large Er-Yb-codoped cores. For an 11-cm-long cladding-pumped fiber laser, more than 3 W of continuous wave output power is demonstrated, and near single-mode beam quality is obtained for an active core area larger than 400 microm2.
Li
L
L
Optical Sciences Center, University of Arizona, Tucson, Arizona 85721, USA. lli@email.arizona.edu
Schülzgen
A
A
Temyanko
V L
VL
Qiu
T
T
Morrell
M M
MM
Wang
Q
Q
Mafi
A
A
Moloney
J V
JV
Peyghambarian
N
N