Broadband Tm-doped superfluorescent fiber source with 11 W single-ended output power.
High-power operation of a cladding-pumped Tm-doped broadband superfluorescent fiber source in the two-micron wavelength regime is described. Predominately single-ended operation was achieved using a simple all-fiber geometry without the use of a high reflectivity mirror or fiber Bragg gratings. The source produced >11 W of single-ended amplified spontaneous emission output spanning the wavelength range from approximately 1930 nm to 1988 nm for a launched diode pump power of approximately 40 W at approximately 790 nm, corresponding to a slope efficiency of 38% with respect to launched pump power. The wavelength spectrum of the superfluorescent source spanned the range from approximately 1650 to 2100 nm with a bandwidth (FWHM) of > 100 nm for output power levels of < 20 mW.
Shen
D Y
DY
Optoelectronics Research Centre, University of Southampton, Southampton, United Kingdom. des@orc.soton.ac.uk
Pearson
L
L
Wang
P
P
Sahu
J K
JK
Clarkson
W A
WA
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D053844:Lasers, Solid-State; D008029:Lighting / Q000295:instrumentation*; D013050:Spectrometry, Fluorescence / Q000295:instrumentation*