Sub-100 fs Tm:MgWO4 laser at 2017 nm mode locked by a graphene saturable absorber

We present the first sub-100 fs bulk solid-state laser in the 2-mu m spectral range employing the monoclinic Tm3+ - doped MgWO4 crystal as an active medium. By applying a graphene-based saturable absorber and chirped mirrors for dispersion management, stable self-starting mode-locked operation at 2017 nm was achieved. Nearly Fourier-limited pulses as short as 86 fs featuring a bandwidth of 53 nm were generated at a repetition rate of 76 MHz. A pulse energy of 1.1 nJ was achieved at 87 MHz for a pulse duration of 96 fs. The mode-locked Tm3+:MgWO4 laser exhibits excellent stability with a fundamental beat note extinction ratio of 80 dBc above noise level. (C) 2017 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2017-08
Language
English
Keywords

MU-M; BULK LASER; GENERATION; CRYSTAL; LOCKING; PULSES; GROWTH; TUNGSTATE; WAVE

Citation

OPTICS LETTERS, v.42, no.16, pp.3076 - 3079

ISSN
0146-9592
DOI
10.1364/OL.42.003076
URI
http://hdl.handle.net/10203/225821
Appears in Collection
PH-Journal Papers(저널논문)
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