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Mid-infrared continua via spectral broadening and difference frequency generation in a nanophotonic lithium niobate waveguide
Markus Ludwig, Furkan Ayhan, Thibault Voumard +5
Periodically poled thin film lithium niobate waveguides provide simultaneous access to efficient second and third order nonlinear processes, enabling broadband generation of cohere…
Spectral dynamics in broadband frequency combs with overlapping harmonics
Weichen Fan, Furkan Ayhan, Thibault Wildi +8
Optical frequency combs and their spectra of evenly spaced discrete laser lines are essential to modern time and frequency metrology. Recent advances in integrated photonic wavegui…
Phase-stabilised self-injection-locked microcomb
Thibault Wildi, Alexander E. Ulanov, Thibault Voumard +2
Microresonator frequency combs (microcombs) hold great potential for precision metrology within a compact form factor, impacting a wide range of applications such as point-of-care…
Femtosecond pulse amplification on a chip
Mahmoud A. Gaafar, Markus Ludwig, Kai Wang +13
Femtosecond laser pulses enable the synthesis of light across the electromagnetic spectrum and provide access to ultrafast phenomena in physics, biology, and chemistry. Chip-integr…
Sideband Injection Locking in Microresonator Frequency Combs
Thibault Wildi, Alexander Ulanov, Nicolas Englebert +2
Frequency combs from continuous-wave-driven Kerr-nonlinear microresonators have evolved into a key photonic technology with applications from optical communication to precision spe…
Ultraviolet astronomical spectrograph calibration with laser frequency combs from nanophotonic lithium niobate waveguides
Markus Ludwig, Furkan Ayhan, Tobias M. Schmidt +21
Astronomical precision spectroscopy underpins searches for life beyond Earth, direct observation of the expanding Universe and constraining the potential variability of physical co…