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arXiv · 2203.15915

Thermal noise-limited laser stabilization to an 8 mL volume Fabry-P\'erot reference cavity with microfabricated mirrors

Charles A. McLemore·Naijun Jin·Megan L. Kelleher·James P. Hendrie·David Mason·Yizhi Luo·Dahyeon Lee·Peter Rakich·Scott A. Diddams·Franklyn Quinlan
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Abstract

Lasers stabilized to vacuum-gap Fabry-P\'erot optical reference cavities display extraordinarily low noise and high stability, with linewidths much less than 1 Hz. These lasers can expand into new applications and ubiquitous use with the development of compact, portable cavities that are manufacturable at scale. Here we demonstrate an 8 mL volume Fabry-P\'erot cavity constructed with mirrors that are fabricated lithographically with finesse near 1 million. A laser locked to the cavity exhibits phase noise limited by the cavity thermal noise for offset frequencies ranging from 1 Hz to $\approx$ 1 kHz, with a fractional frequency stability of 7$\times$10$^{-15}$ at 1 second. Furthermore, the use of microfabricated mirrors allows us to expand the design space of centimeter-scale cavities, and we explore the noise implications of pushing towards cavity volumes of 2 mL or less.

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Charles A. McLemore, Naijun Jin, Megan L. Kelleher, James P. Hendrie, David Mason, Yizhi Luo, Dahyeon Lee, Peter Rakich, Scott A. Diddams, Franklyn Quinlan. 2022-03-29. Thermal noise-limited laser stabilization to an 8 mL volume Fabry-P\'erot reference cavity with microfabricated mirrors. https://arxiv.org/abs/2203.15915

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