activity
20242026
most citedSupercontinua from integrated gallium nitride waveguides

14 citations · 15 across the 4 of their papers we have counts for

collaborators

5 papers

physics.optics2026

-2 self-referencing for silicon nitride photonics via a heterogeneously integrated lithium niobate layer

Weichen Fan, Bastian Ruhnke, Camiel Op de Beeck +4

Heterogeneous integration combines complementary material properties in a single photonic platform. Here, we demonstrate on-chip -2 self-referencing in a heterogeneously inte…

astro-ph.IM2026

Test of a 34 GHz EOM laser frequency comb at ESPRESSO

Tobias M. Schmidt, Ewelina Obrzud, François Bouchy +18

Laser frequency combs (LFCs) are a promising technology for wavelength calibration of astronomical high-resolution spectrographs requiring utmost accuracy and stability, since they…

physics.optics2025

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…

physics.optics2025★ 1 cited

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…

physics.optics2024★ 14 cited

Supercontinua from integrated gallium nitride waveguides

Weichen Fan, Markus Ludwig, Ian Rousseau +4

Supercontinua are broadband spectra that are essential to optical spectroscopy, sensing, imaging, and metrology. They are generated from ultrashort laser pulses through nonlinear f…