Double Feature: Towards attosecond and femtosecond spectroscopy at extreme limits (Dr. Hanieh Fattahi)

Towards attosecond and femtosecond spectroscopy at extreme limits

Date: Jun 18, 2019
Time: 02:30 PM (Local Time Germany)
Speaker: Dr. Hanieh Fattahi
Attosecond Physics Division
Location: Max Planck Institute of Quantum Optics
Room: Herbert Walther Lecture Hall

This talk is devoted to modern methods for attosecond and femtosecond laser spectroscopy, with the special focus on applications that require extreme spatial resolution.

In the first part, I discuss two of the long-standing challenges in attosecond spectroscopy: i) the required photon flux for XUV pump-XUV probe spectroscopy, and ii) the necessary ultra-high spatiotemporal resolution for resolving electron-dynamic in matter. High harmonic generation by high-energy, high-power light transients holds promise to overcome both barriers. I demonstrate our effort in this direction and the first prototype field-synthesizer based on Yb:YAG, thin-disk laser technology.

In the second part of my talk, I show the first proof of principle sampling of the electric field of light at PHz frequency in ambient air by means of electro-optic sampling and discuss the potential of the technique in molecular spectroscopy and imaging.