Miniaturized optical frequency standard for nextgeneration portable optical clocks
Abstract
Optical frequency standards, lasers stabilized to atomic or molecular transitions, are widely used in length metrology and laser ranging, provide a backbone for optical communications and lie at the heart of nextgeneration optical atomic clocks. Here we demonstrate a compact, lowpower optical frequency standard based on the Dopplerfree, twophoton transition in rubidium87 at 778 nm implemented on a microoptics breadboard. The optical standard achieves a fractional frequency stability of 2.9x10$^{12}$/$\sqrt{\tau}$ for averaging times $\tau$ less than 10$^{3}$ s, has a volume of $\approx$35 cm$^3$ and operates on $\approx$450 mW of electrical power. These results demonstrate a key step towards the development of compact optical clocks and the broad dissemination of SItraceable wavelength references.
 Publication:

arXiv eprints
 Pub Date:
 March 2020
 arXiv:
 arXiv:2003.13172
 Bibcode:
 2020arXiv200313172M
 Keywords:

 Physics  Atomic Physics;
 Physics  Optics
 EPrint:
 4 pages, 4 figures