Emerging applications in quantum information, microscopy, biosensing, depth sensing, and
augmented reality demand miniaturized components in the visible (VIS) and near-infrared …

Frequency combs are optical spectra composed of a set of discrete equally spaced lines.
Such spectra can be generated by diverse sources such as mode-locked lasers, resonators …

We present a high performance silicon nitride photonic integrated circuit platform operating
at visible wavelengths, accessible through the commercial foundry, LIGENTEC. Propagation …

Cosmological and exoplanetary science using transformative telescopes like the ELT will
demand precise calibration of astrophysical spectrographs in the blue-green, where stellar …

Frequency combs with mode spacing of 10–20 GHz are critical for increasingly important
applications such as astronomical spectrograph calibration, high-speed dual-comb …

It is widely acknowledged that the phase noise of an optical frequency comb primarily stems
from the common mode (carrier-envelope) and the repetition rate phase noise. However …

Astrocombs are ideal spectrograph calibrators whose limiting precision can be derived
using a second, independent, astrocomb system. We therefore analyse data from two …

Nonlinear optical frequency conversion is of fundamental importance in photonics and
underpins countless of its applications: Sum-and difference-frequency generation in media …

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

Frequency conversion in nonlinear materials is an extremely useful solution to the
generation of new optical frequencies. Often, it is the only viable solution to realize light …