1.5 mum single longitudinal mode waveguide laser fabricated by femtosecond laser writing.
A compact and efficient single longitudinal mode laser based on a femtosecond laser written waveguide is demonstrated. A maximum output power exceeding 50 mW was measured in single longitudinal and transverse mode operation, with 21% slope efficiency. The active waveguide was fabricated on erbium-ytterbium-doped phosphate glass by direct writing with femtosecond laser pulses from a diode-pumped cavity-dumped oscillator.
Della Valle
G
G
Taccheo
S
S
Osellame
R
R
Festa
A
A
Cerullo
G
G
Laporta
P
P