Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Femtosecond timekeeping: slip-free optical clockwork for optical timescales

Published

Author(s)

Daniel I. Herman, Stefan Droste, Esther Baumann, Jonathan Roslund, Dmitriy Churin, Arman Cingoz, Jean-Daniel Deschenes, Isaac H. Khader, William C. Swann, Craig W. Nelson, Nathan R. Newbury, Ian R. Coddington

Abstract

The generation of true optical time standards will require the conversion of the highly stable optical frequency output of an optical atomic clock to a high-fidelity time output. We demonstrate comb-based clockwork that phase-coherently integrates ~7x10e20 optical cycles of an input optical frequency to create a coherent time output. We verify the underlying stability of the optical timing system by comparing two comb-based clockworks with a common input optical frequency and show
Citation
Physical Review Applied
Volume
9

Keywords

(140.3510) Lasers, fiber, (140.3425) Laser stabilization, (120.5050) Phase measurement

Citation

Herman, D. , Droste, S. , Baumann, E. , Roslund, J. , Churin, D. , Cingoz, A. , Deschenes, J. , Khader, I. , Swann, W. , Nelson, C. , Newbury, N. and Coddington, I. (2018), Femtosecond timekeeping: slip-free optical clockwork for optical timescales, Physical Review Applied, [online], https://doi.org/10.1103/PhysRevApplied.9.044002 (Accessed December 3, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created April 3, 2018, Updated October 3, 2019