Ultrashort laser pulses; Nonlinear fiber optics; Ultrafast science; Light-plasma interactions; Optical fibers; Extreme light
Dwapanyin George, Spangenberg Dirk, Heidt Alexander, Feurer Thomas, Bosman Gurthwin, Neethling Pieter, Rohwer Erich (2020), Generalized spectral phase-only time-domain ptychographic phase reconstruction applied in nonlinear microscopy, in Journal of the Optical Society of America B
, 37(11), A285.
Viljoen Ruan, Neethling Pieter, Spangenberg Dirk, Heidt Alexander, Frey Hans-Martin, Feurer Thomas, Rohwer Erich (2020), Implementation of temporal ptychography algorithm, i2PIE, for improved single-beam coherent anti-Stokes Raman scattering measurements, in Journal of the Optical Society of America B
, 37(11), A259.
Sierro Benoît, Heidt Alexander (2020), Noise amplification in all-normal dispersion fiber supercontinuum generation and its impact in ultrafast photonics applications, in OSA Continuum
Rampur Anupamaa, Spangenberg Dirk, Stepniewski Grzegorz, Dobrakowski Dominik, Tarnowski Karol, Stefanska Karolina, Pazdzior Adam, Mergo Pawel, Martynkien Tadeusz, Feurer Thomas, Klimczak Mariusz, Heidt Alexander (2020), Temporal fine structure of all-normal dispersion fiber supercontinuum pulses caused by non-ideal pump pulse shapes, in Optics Express
, 28(11), 16579.
Rampur Anupamaa, Stepanenko Yuriy, Stępniewski Grzegorz, Kardaś Tomasz, Dobrakowski Dominik, Spangenberg Dirk-Mathys, Feurer Thomas, Heidt Alexander, Klimczak Mariusz (2019), Ultra low-noise coherent supercontinuum amplification and compression below 100 fs in an all-fiber polarization-maintaining thulium fiber amplifier, in Optics Express
, 27(24), 35041.
Heidt Alexander, Spangenberg Dirk-Mathys, Pilz Sönke, Hochstrasser Martin, Ryser Manuel, Romano Valerio, Feurer Thomas (2019), Specialty Optical Fibers for the Generation of Light with Extreme Properties (Invited Paper), in Proceedings of SPIE Vol. 11206
, SPIE, Bellingham, WA.
Temporal fine structure of all-normal dispersion fiber supercontinuum pulses caused by non-ideal pump pulse shapes [Dataset]
||Rampur, Anupamaa; Spangenberg, Dirk-Mathys; Stępniewski, Grzegorz; Dobrakowski, Dominik; Tarnowski, Karol; Stefańska, Karolina; Paździor, Adam; Mergo, Pawel; Martynkien, Tadeusz; Feurer, Thomas; Klimczak, Mariusz; Heidt, Alexander
|Persistent Identifier (PID)
Bern Open Repository and Information System
This dataset contains the data published in the manuscript "Temporal fine structure of all-normal dispersion fiber super continuum pulses caused by non-ideal pump pulse shapes", Opt. Express 28(11), 16579 (2020), https://doi.org/10.1364/OE.392871Funders: Swiss National Science Foundation, Grant number: PCEFP2_181222, University of Bern
Noise amplification in all-normal dispersion fiber supercontinuum generation and its impact in ultrafast photonics applications [Dataset]
This dataset contains the data published in the manuscript "Noise amplification in all-normal dispersion fiber supercontinuum generation and its impact in ultrafast photonics applications", OSA Continuum, in press, https://doi.org/10.1364/OSAC.397603 Funders:Swiss National Science Foundation, Grant number: PCEFP2_181222, University of Bern
Understanding the interaction of intense ultrashort light pulses with plasmas is a key requirement to advance many ground-breaking strong-field physics applications like high harmonics generation (HHG), attoscience, and lightwave electronics. Gas-filled hollow-core photonic crystal fibers (HC-PCF) have emerged in recent years as an ideal platform for this purpose. The tight confinement of high intensity few-cycle laser pulses over long distances has made it possible to study the coherent nonlinear interaction between light and photo-ionized plasmas in a well-controlled environment, which led to the generation of light with extreme properties both in the temporal and the spectral domain.In this project I propose to explore new regimes of light-plasma interaction by combining advancements in the state-of-the-art of few-cycle laser pulse amplification in optical fibers with new concepts of plasma generation in HC-PCF. Few cycle pulses possess an extremely large spectral bandwidth in the order of one optical octave that exceeds the linear gain-bandwidth of any known medium, making their amplification a challenging task that will be tackled in this project with innovative concepts in fiber-optic technology, which are based on fiber manufacturing technology developed at the University of Bern. The developed amplification systems address the current quest for high average power few-cycle pulse sources, triggered by the need to increase the photon flux for coherent XUV spectroscopy, imaging, and attoscience applications based on HHG, which suffers from low efficiency.Further I envisage to combine these novel sources with new possibilities for exciting in-fiber electric gas discharges in HC-PCF. This would create an innovative and extremely versatile photonic platform ideally suited for the fundamental studies of light-plasma interactions in regimes not currently accessible, and also enable the development of in-fiber gas lasers and other novel light sources in emerging spectral regions with high potential impact on fundamental science, biology, healthcare, and sensing applications.