TY  - JOUR
AU  - Gaafar, Mahmoud A.
AU  - Ludwig, Markus
AU  - Wang, Kai
AU  - Wildi, Thibault
AU  - Voumard, Thibault
AU  - Sinobad, Milan
AU  - Lorenzen, Jan
AU  - Francis, Henry
AU  - Zhang, Shuangyou
AU  - Bi, Toby
AU  - Del'Haye, Pascal
AU  - Geiselmann, Michael
AU  - Singh, Neetesh Kumar
AU  - Kärtner, Franz
AU  - Garcia-Blanco, Sonia
AU  - Herr, Tobias
TI  - Femtosecond pulse amplification on a chip
JO  - Nature Communications
VL  - 15
IS  - 1
SN  - 2041-1723
CY  - [London]
PB  - Nature Publishing Group UK
M1  - PUBDB-2024-05452
SP  - 8109
PY  - 2024
AB  - 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.
LB  - PUB:(DE-HGF)16
C6  - pmid:39285172
UR  - <Go to ISI:>//WOS:001314910500006
DO  - DOI:10.1038/s41467-024-52057-3
UR  - https://bib-pubdb1.desy.de/record/612767
ER  -