Influence of pulse duration and repetition rate on mid-infrared cascaded supercontinuum

We experimentally investigate the influence of varying pulse parameters on the spectral broadening, power spectral density, and relative intensity noise of mid-infrared (mid-IR) in-amplifier cascaded supercontinuum generation (SCG) by varying the pulse duration (35 ps, 1 ns, 3 ns) and repetition rat...

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Bibliographic Details
Published in:Optics letters 2020-09, Vol.45 (18), p.5161-5164
Main Authors: Kwarkye, Kyei, Jensen, Mikkel, Dasa, Manoj K., Woyessa, Getinet, Jain, Deepak, Bowen, Patrick, Moselund, Peter M., Sidharthan, Raghuraman, Chen, Shaoxiang, Yoo, Seongwoo, Petersen, Christian R., Bang, Ole
Format: Article
Language:English
Subjects:
Amplifiers
Erbium
Germanium
Noise intensity
Power spectral density
Pulse duration
Relative intensity noise
Repetition
Thulium
Ytterbium
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Summary:We experimentally investigate the influence of varying pulse parameters on the spectral broadening, power spectral density, and relative intensity noise of mid-infrared (mid-IR) in-amplifier cascaded supercontinuum generation (SCG) by varying the pulse duration (35 ps, 1 ns, 3 ns) and repetition rate (100, 500, 1000 kHz). The system is characterized at the output of the erbium-ytterbium-doped in-amplifier SCG stage, the thulium/germanium power redistribution stage, and the passive ZBLAN fiber stage. In doing so, we demonstrate that the output of the later stages depends critically on the in-amplifier stage, and relate this to the onset of modulation instability.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.401274