PHz scale spectral broadening and few-cycle compression of Yb:KGW laser pulses in a pressurized, gas-filled hollow-core fiber

• Published in: arXiv.org
• Main Authors: Z Pi, Kim, H Y, Goulielmakis, E
• Format: Paper Journal Article
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 21.09.2022
• Subjects: Physics - Optics; Potassium gadolinium tungstate
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2209.10472

We demonstrate efficient generation of coherent super-octave pulses via a single-stage spectral broadening of a Yb:KGW laser in a single, pressurized, Ne-filled, hollow-core fiber capillary. Emerging pulses spectrally spanning over more than \(\sim\)1 PHz (250 nm- 1600 nm) at a dynamic range of \(\sim\)60 dB, and an excellent beam quality open the door to combining Yb:KGW lasers with modern light field synthesis techniques. Compression of a fraction of the generated supercontinuum to intense (8 fs, \(\sim\)2.4 cycle, \(\sim\)650 \(\mu\)J) pulses allows convenient use of these novel laser sources in strong-field physics and attosecond science.