Raman fiber laser with 81 W output power at 1480 nm.
We demonstrate a Raman fiber laser with an operating wavelength of 1480 nm and record output power of 81 W. High-power operation is enabled by a long-period grating used to frustrate backward lasing at the Stokes wavelength in the Yb-doped fiber amplifier. A cascaded Raman fiber with a long-wavelength fundamental mode cutoff enables efficient multiple Stokes scattering from 1117 to 1480 nm while preventing further unwanted scattering to 1590 nm.
Nicholson
J W
JW
OFS Laboratories, 19 Schoolhouse Road, Suite 105, Somerset, New Jersey 08873, USA. jwn@ofsoptics.com
Yan
M F
MF
Wisk
P
P
Fleming
J
J
DiMarcello
F
F
Monberg
E
E
Taunay
T
T
Headley
C
C
DiGiovanni
D J
DJ