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arXiv · 2211.06364

The dynamical Franz-Keldysh effect in the deep ultraviolet probed by transient absorption and dispersion of diamond using a miniature beamline

Jan Reislöhner·Xiao Chen·Doyeong Kim·Silvana Botti·Adrian N. Pfeiffer
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Abstract

The deep ultraviolet, the bandgap region of dielectrics, is not readily accessible for established methods of ultrafast spectroscopy. Here, a miniature beamline, where a tailored deep ultraviolet field is used immediately after the noncollinear generation without subsequent optical elements, is introduced for transient absorption and dispersion spectroscopy. The near-bandgap region of diamond in the presence of a few-femtosecond pump pulse is explored where the delayed dynamical Franz-Keldysh effect and the almost instantaneous optical Kerr effect coexist.

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Jan Reislöhner, Xiao Chen, Doyeong Kim, Silvana Botti, Adrian N. Pfeiffer. 2022-11-11. The dynamical Franz-Keldysh effect in the deep ultraviolet probed by transient absorption and dispersion of diamond using a miniature beamline. https://arxiv.org/abs/2211.06364

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