TY - JOUR
T1 - High-power and tunable operation of erbium-ytterbium co-doped cladding-pumped fiber lasers
AU - Nilsson, Johan
AU - Alam, Shaif Ul
AU - Alvarez-Chavez, Jose A.
AU - Turner, Paul W.
AU - Clarkson, W. Andrew
AU - Grudinin, Anatoly B.
PY - 2003/8
Y1 - 2003/8
N2 - We describe erbium-ytterbium co-doped fiber lasers in different free-running and tunable configurations. The lasers were cladding-pumped by high-power multimode diode sources. We compare pumping at 915 and 980 nm. With a free-running laser, we obtained slope efficiencies of up to 50% with 915-nm pumping and 38% with 980-nm pumping, with respect to absorbed pump power. We reached a double-ended output power of 16.8 W from the free-running laser. Thanks to a high rare-earth concentration and a small inner cladding area (possible with the high-brightness pump sources we used), the operating pump absorption of the fiber reached 8 dB/m. With such high absorption, short fibers with high nonlinear thresholds are possible even with cladding pumping. The tunable fiber laser had a tuning range from 1533 to 1600 nm and emitted 6.7 W of output power at 1550 nm in a high-brightness, single-polarization, narrow linewidth beam.
AB - We describe erbium-ytterbium co-doped fiber lasers in different free-running and tunable configurations. The lasers were cladding-pumped by high-power multimode diode sources. We compare pumping at 915 and 980 nm. With a free-running laser, we obtained slope efficiencies of up to 50% with 915-nm pumping and 38% with 980-nm pumping, with respect to absorbed pump power. We reached a double-ended output power of 16.8 W from the free-running laser. Thanks to a high rare-earth concentration and a small inner cladding area (possible with the high-brightness pump sources we used), the operating pump absorption of the fiber reached 8 dB/m. With such high absorption, short fibers with high nonlinear thresholds are possible even with cladding pumping. The tunable fiber laser had a tuning range from 1533 to 1600 nm and emitted 6.7 W of output power at 1550 nm in a high-brightness, single-polarization, narrow linewidth beam.
KW - Double-clad fiber
KW - Erbium
KW - Fiber laser
KW - Laser tuning
KW - Ytterbium
UR - http://www.scopus.com/inward/record.url?scp=0041671042&partnerID=8YFLogxK
U2 - 10.1109/JQE.2003.814373
DO - 10.1109/JQE.2003.814373
M3 - Artículo
SN - 0018-9197
VL - 39
SP - 987
EP - 994
JO - IEEE Journal of Quantum Electronics
JF - IEEE Journal of Quantum Electronics
IS - 8
ER -