Numerous modern technologies are reliant on the low-phase noise and exquisite timing
stability of microwave signals. Substantial progress has been made in the field of microwave …

Communication, navigation and radar systems rely on frequency-tunable and low-noise
microwave sources. Compared to electronic microwave synthesizers, photonic systems that …

Next-generation communications, radar, and navigation systems will extend and exploit the
higher bandwidth of the millimeter-wave domain for increased communication data rates as …

We demonstrate a vacuum-gap ultrastable optical reference cavity that does not require a
vacuum enclosure. Our simple method of optical contact bonding in a vacuum environment …

We demonstrate a high finesse, microfabricated mirror-based, air-gap cavity with volume
less than 1 ml, constructed in an array, that can support low-noise microwave generation …

Fast-tunable filters play a crucial role in various applications including tunable lasers, high-
speed optical communications, microwave photonics, and spectroscopy. However, current …

Stable lasers play a significant role in precision optical systems where an electro-optic laser
frequency stabilization system, such as the Pound-Drever-Hall technique, measures laser …

Low-noise microwave oscillators are cornerstones for wireless communication, radar and
clocks. Optical frequency combs have enabled photonic microwaves with unrivalled noise …

We demonstrate chip-scale sub-Doppler spectroscopy in an integrated and fiber-coupled
photonic-metasurface device. The device is a stack of three planar components: a photonic …

We analyse a system of a singly resonant optical parametric oscillator for a second order
nonlinear material. First, we show that the dynamics of the resonating cavity signal mode …