Single-frequency Ho(3+)-doped ZBLAN fiber laser at 1200 nm.
A single-frequency (SF) fiber laser at 1200 nm was developed with a distributed Bragg reflector (DBR) configuration by splicing a 22 mm long highly holmium-doped ZBLAN (ZrF(4)-BaF(2)-LaF(3)-AlF(3)-NaF) fiber with a pair of silica fiber Bragg gratings. The linewidth was estimated to be less than 100 kHz based on the measured frequency noise. The relative intensity noise was measured to be <110 dB/Hz at the relaxation oscillation peak and the polarization extinction ratio was measured to be >19 dB. Our results highlight the exciting prospect that wavelength coverage of SF DBR fiber lasers can be expanded significantly by using rare-earth-doped ZBLAN fibers.
NP Photonics Inc., 9030 S. Rita Road, Tucson, Arizona 85747, USA. xzhu@npphotonics.com
Xiushan
X
Zhu
Jie
J
Zong
Andy
A
Miller
Kort
K
Wiersma
R A
RA
Norwood
Narasimha S
NS
Prasad
Arturo
A
Chavez-Pirson
N
N
Peyghambarian