193-GHz 53-W Subpicosecond Pulse Source

Author

Saarinen, Esa J. ; Filippov, Valery ; Chamorovskiy, Yuri ; Golant, Konstantin ; Tavast, Miki ; Rantamaki, Antti ; Okhotnikov, Oleg G.

Author_Institution

Optoelectron. Res. Centre, Tampere Univ. of Technol., Tampere, Finland

Volume

27

Issue

7

fYear

2015

fDate

April1, 1 2015

Firstpage

778

Lastpage

781

Abstract

We present a light source that can generate a pulse train with an extremely high repetition rate, tens of watts of average output power, and a low-divergence output beam. This unique combination of system characteristics is achieved with single-stage amplification of a passively harmonically mode-locked semiconductor disk laser in a tapered Yb-doped double-clad fiber. With the short-length tapered fiber amplifier an amplification factor >17 dB is reached, while preserving the 930-fs pulse duration of the semiconductor disk laser. The demonstrated pulse source with a beam quality factor <;2 enables efficient coupling into single-mode fibers for nonlinear optical experiments and ultracoarse frequency comb generation.

Keywords

Q-factor; laser beams; laser mode locking; optical fibre amplifiers; optical frequency combs; optical pulse generation; semiconductor optical amplifiers; ytterbium; amplification factor; beam quality factor; frequency 193 GHz; light source; low-divergence output beam; nonlinear optical experiments; output power; passively harmonically mode-locked semiconductor disk laser; power 53 W; pulse duration; pulse train generation; repetition rate; short-length tapered fiber amplifier; single-mode fibers; single-stage amplification; subpicosecond pulse source; tapered Yb-doped double-clad fiber; time 930 fs; ultracoarse frequency comb generation; Fiber lasers; Laser mode locking; Optical fiber amplifiers; Optical fiber polarization; Semiconductor lasers; Semiconductor disk lasers; optical fiber amplifiers; tapered double-clad fibers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2015.2392155

Filename

7017513