All-solid-state multipass spectral broadening to sub-20 fs

Fritsch, Kilian; Pötzlberger, Markus; Pervak, Vladimir; Brons, Jonathan und Pronin, Oleg (2018): All-solid-state multipass spectral broadening to sub-20 fs. In: Optics Letters, Bd. 43, Nr. 19: S. 4643-4646

Abstract

In this work, we present a nonlinear spectral broadening and compression scheme based on self-phase modulation in bulk media inside a Herriott-type multipass cell. With this reliable approach, we achieved a spectral broadening factor of 22 while maintaining an efficiency of over 60% at an average input power of 100 W, and an excellent output beam quality with M-2 = 1.2. The output pulses were compressed to 18 fs, with the broadest spectrum supporting a Fourier-transform limit of 10 fs. The high efficiency and approximately four-optical-cycle pulse duration mark an important milestone towards the realization of a compact, high power oscillator-based driver for XUV frequency combs and other nonlinear processes.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Physik
• Themengebiete: 500 Naturwissenschaften und Mathematik > 530 Physik
• ISSN: 0146-9592
• Sprache: Englisch