Lasers with hertz linewidths at time scales of seconds are critical for metrology, timekeeping,
and manipulation of quantum systems. Such frequency stability relies on bulk-optic lasers …

Laser stabilization sits at the heart of many precision scientific experiments and applications,
including quantum information science, metrology, and atomic timekeeping. Many of these …

Frequency references are indispensable to radio, microwave and time keeping systems,
with far reaching applications in navigation, communication, remote sensing and basic …

Advanced applications in optical metrology demand improved lasers with high spectral
purity, in form factors that are small and insensitive to environmental perturbations. While …

Ultrastable high-spectral-purity lasers have served as the cornerstone behind optical atomic
clocks, quantum measurements, precision optical microwave generation, high-resolution …

We develop and demonstrate a compact (less than 6 mL) portable Fabry-Pérot optical
reference cavity. A laser locked to the cavity is thermal noise limited at 2× 10^− 14 fractional …

Laboratory optical atomic clocks achieve remarkable accuracy (now counted to 18 digits or
more), opening possibilities for exploring fundamental physics and enabling new …

Lasers with high spectral purity can enable a diverse application space, including precision
spectroscopy, coherent high‐speed communications, physical sensing, and manipulation of …

Precision optical-frequency and phase synchronization over fibre is critical for a variety of
applications, from timekeeping to quantum optics. Such applications utilize ultra-coherent …

State-of-the-art laser frequency stabilization by high-finesse optical cavities is limited
fundamentally by thermal noise-induced cavity length fluctuations. We present a novel …