Ultrastable silicon cavity in a continuously operating closed-cycle cryostat at 4 K

Zhang, W. et al. (2017) Ultrastable silicon cavity in a continuously operating closed-cycle cryostat at 4 K. Physical Review Letters, 119(24), 243601. (doi: 10.1103/PhysRevLett.119.243601)

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Abstract

We report on a laser locked to a silicon cavity operating continuously at 4 K with 1 × 10 − 16 instability and a median linewidth of 17 mHz at 1542 nm. This is a tenfold improvement in short-term instability, and a 1 0 4 improvement in linewidth, over previous sub-10-K systems. Operating at low temperatures reduces the thermal noise floor and, thus, is advantageous toward reaching an instability of 10 − 18 , a long-sought goal of the optical clock community. The performance of this system demonstrates the technical readiness for the development of the next generation of ultrastable lasers that operate with an ultranarrow linewidth and long-term stability without user intervention.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Oelker, Dr Eric
Authors: Zhang, W., Robinson, J. M., Sonderhouse, L., Oelker, E., Benko, C., Hall, J. L., Legero, T., Matei, D. G., Riehle, F., Sterr, U., and Ye, J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN:0031-9007
ISSN (Online):1079-7114
Copyright Holders:Copyright © 2017 American Physical Society
First Published:First published in Physical Review Letters 119(24): 243601
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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