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Promotionsvortrag Physik: "Ultrashort mid-infrared pulse generation in soft-glass fibre laser system"

Jul 17
17. Juli 2020 13:30 Uhr bis 14:30 Uhr
Ort: Bibliothek A 2.500, Max-Planck-Institut für die Physik des Lichts, Staudtstr. 2, Erlangen

Ankündigung des Promotionsvortrags von Jiapeng Huang

Pulsed mid-infrared (mid-IR) light sources with simultaneously high average power, ultrashort pulse duration and MHz-rate pulse repetition rate are of great interest in molecular spectroscopy, gas detection, frequency metrology and laser surgery. Moreover, with the development of soft-glass fibre, such as ZBLAN and chalcogenide glass fibre, these mid-IR fibre lasers are able to work beyond the silica transmission window, lasing in the wavelength region between 2.7 micron and 4 micron. However, due to the lack of dispersion-compensation elements or fibres in this region, all previously-reported fibre lasers operated in the soliton or average-soliton region, clamping the pulse energy and limiting the shortest pulse duration.
This talk is concerned with transient dynamics of laser solitons, revealing an energy clamping effect in the mid-IR mode-locked fibre laser. It also describes the development of a dispersion-compensation element at mid-IR wavelengths to improve the performance of a mid-IR fibre laser system, shortening the laser pulse duration to the sub-two-cycle region. In additional studies, Raman red-shift solitons and supercontinuum generation are also produced in various soft-glass fibres, exploring the full potential of soft-glass fibres in mid-IR applications.

(Vortrag auf Englisch)

Dem Vortrag schließt sich eine Diskussion von 15 Minuten an. Vortrag und Diskussion sind aufgrund der momentanen Situation nicht öffentlich. Diesen Verfahrensteilen folgt ein ebenfalls nicht öffentliches Rigorosum von 45 Minuten.