Zuerch Lab
ULTRAFAST OPTICAL & X-RAY SPECTROSCOPY | ULTRAFAST IMAGING | ATTOSCIENCE
Zuerch Lab
ULTRAFAST OPTICAL & X-RAY SPECTROSCOPY | ULTRAFAST IMAGING | ATTOSCIENCE

Extreme Photonics

In our lab we develop and employ light sources that have extremely short pulse durations. In the optical domain we routinely achieve pulse durations of a few femtoseconds covering the whole visible light spectrum and the near-infrared. Locking the electric field of the laser pulse to its envelope, so-called carrier-envelope phase stabilization, allows us to taylor optical and near-infrared laser pulses such that they can either be employed for phase-resolved excitation (“pump”) or for nonlinear up-conversion into the extreme ultraviolet and soft X-ray range (“probe”) allowing for transient absorption spectroscopy in the pump-probe scheme.

Furthermore, the Zuerch Lab conducts experiments together with other research groups at Free-electron laser facilities. There, we leverage the extreme intensities a focused ultrafast X-ray beam can reach for achieving a non-linear X-ray response of the material. This provides access to surface and interfacial electronic properties and allows combining material selectivity and high-resolution imaging with surface specificity. These new tools will provide unique insights in the processes governing for example photocatalythic reactions on nanostructured surfaces.

References:

R. Sollapur, D. Kartashov, M. Zürch, A. Hoffmann, T. Grigorova, G. Sauer, A. Hartung, A. Schwuchow, J. Bierlich, J. Kobelke, M. Chemnitz, Markus A. Schmidt, C. Spielmann. Resonanceenhanced multi-octave supercontinuum generation in antiresonant hollow-core fibers, Light: Science & Applications, 6, e17124 (2017)

H.-T. Chang, M. Zürch, P. M. Kraus, L. J. Borja, D. M. Neumark, and S. R. Leone. Simultaneous generation of sub-5-femtosecond 400 nm and 800 nm pulses for attosecond extreme ultraviolet pump-probe spectroscopy, Optics Letters 41 (22), 5365-5368 (2016)

M. Zürch, C. Kern, P. Hansinger, A. Dreischuh, and Ch. Spielmann. Strong-field physics with singular light beams, Nature Physics 8, 743-746 (2012)

S. Eyring, C. Kern, M. Zürch, and C. Spielmann. Improving high-order harmonic yield using wavefront-controlled ultrashort laser pulses, Optics Express 20 (5), 5601-5606 (2012)




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