Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics V
Q 62.97: Poster
Thursday, March 8, 2018, 16:15–18:15, Redoutensaal
Towards sub-two-cycle optical pulse compression from Ti:sapphire oscillators — •Philip Dienstbier1, Takuya Higuchi1, Francesco Tani2, Michael Frosz2, John Travers3, Philip St. J. Russell2, and Peter Hommelhoff1 — 1Department Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Staudtstraße 1, 91058 Erlangen — 2Max Planck Institute for the Science of Light, Staudtstraße 2, 91058 Erlangen, Germany — 3Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom
Strong-field effects within gases and solids require pulse energies in the µJ to mJ regime achievable with amplified lasers at low repetition rates of a few to hundreds of kHz. For systems such as metal nano-emitters [1] or 2D materials [2] the pulse energies necessary to enter the strong-field regime can be lowered to below 1 nJ due to field enhancement or the special band structure. In this pulse energy range Ti:sapphire oscillators can be used providing pulses as short as two optical cycles with typical repetition rates of 80 MHz. An upgrade of the laser source by further shortening the pulse duration should be beneficial for the study of strong-field effects as the contrast between peaks in the electric-field waveform is enhanced. For this we present a setup to spectrally broaden the output of a Ti:sapphire oscillator by a customized solid-core photonic crystal fiber and a prism-based 4f-pulse compressor with expected compression close to a single optical cycle.
[1] M. Krüger, M. Schenk, M. and P. Hommelhoff, Nature 475, 78.
[2] T. Higuchi, C. Heide, K. Ullmann, H. B. Weber and P. Hommelhoff, Nature 550, 224-228.