%0 Journal Article
%A Gaafar, Mahmoud A.
%A Ludwig, Markus
%A Wang, Kai
%A Wildi, Thibault
%A Voumard, Thibault
%A Sinobad, Milan
%A Lorenzen, Jan
%A Francis, Henry
%A Zhang, Shuangyou
%A Bi, Toby
%A Del'Haye, Pascal
%A Geiselmann, Michael
%A Singh, Neetesh Kumar
%A Kärtner, Franz
%A Garcia-Blanco, Sonia
%A Herr, Tobias
%T Femtosecond pulse amplification on a chip
%J Nature Communications
%V 15
%N 1
%@ 2041-1723
%C [London]
%I Nature Publishing Group UK
%M PUBDB-2024-05452
%P 8109
%D 2024
%X Femtosecond laser pulses enable the synthesis of light across the electromagnetic spectrum and provide access to ultrafast phenomena in physics, biology, and chemistry. Chip-integration of femtosecond technology could revolutionize applications such as point-of-care diagnostics, bio-medical imaging, portable chemical sensing, or autonomous navigation. However, current sources lack the required power, and the on-chip amplification of femtosecond pulses is an unresolved challenge. Here, addressing this challenge, we report >50-fold amplification of 1 GHz repetition-rate chirped femtosecond pulses in a CMOS-compatible photonic chip to 800 W peak power with 116 fs pulse duration. Nonlinear effects, usually a hallmark of integrated photonics but prohibitive to pulse amplification are mitigated through all-normal dispersion, large mode-area rare-earth-doped gain waveguides. These results offer a pathway to chip-integrated femtosecond technology with power-levels characteristic of table-top sources.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:39285172
%U <Go to ISI:>//WOS:001314910500006
%R 10.1038/s41467-024-52057-3
%U https://bib-pubdb1.desy.de/record/612767