Details

Autor(en) / Beteiligte

• Kibler, B.
• Lemière, A.
• Gomes, J.-T.
• Gaponov, D.
• Lavoute, L.
• Désévédavy, F.
• Smektala, F.

Titel

Octave-spanning coherent supercontinuum generation in a step-index tellurite fiber and towards few-cycle pulse compression at 2 μm

Ist Teil von

• Optics communications, 2021-06, Vol.488, p.126853, Article 126853

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2021

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• We experimentally demonstrate 140-THz bandwidth (at −20 dB) supercontinuum generation in a 10 cm-long all-normal dispersion step-index tellurite fiber pumped by a turn-key femtosecond fiber laser emitting at 2.11μm at a repetition rate of 19 MHz. The soliton self-frequency shifted thulium-doped fiber mode-locked laser emits initial transform-limited pulses, with 85-fs pulse duration, that are subsequently quasi-linearly chirped (over more than 50 THz) during the above nJ-level nonlinear propagation. Moreover, we numerically demonstrate the possible pulse compression down to 12 fs by means of additional linear propagation in a standard step-index fluoride fiber with anomalous dispersion. •Octave-spanning coherent supercontinuum generation in step-index tellurite fibers.•Experimental demonstration based on 2 μm fiber laser pumping.•Numerical simulations confirm possible fiber-based few-cycle pulse compression.