Ultra-compact reference ULE cavity

Abstract

We present a first experimental characterization of our ultra-compact, ultra-stable laser. The heart of the apparatus is an original Fabry-Perot cavity with a 25 mm length and a pyramidal geometry, equipped with highly-reflective crystalline coatings. The cavity, along with its vacuum chamber and optical setup, fits inside a 30 L volume. We have measured the cavity thermal and vibration sensitivities, and present a first estimation of the cavity fractional frequency instability at ${\sigma }_y(1\mathrm{s})=7.5\times 10^{-15}$.

4 pages, 5 figures

References in corpus (3)

• Photonic microwave signals with zeptosecond level absolute timing noise
• Tuning the Thermal Expansion Properties of Optical Reference Cavities with Fused Silica Mirrors
• A compact, robust, and transportable ultra-stable laser with a fractional frequency instability of $1\times 10^{-15}$