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.

Optical Frequency Standards and Their Measurement

Published

Author(s)

John L. Hall, Jun Ye

Abstract

The last four years have seen a revolution in the art and practice of optical frequency measurement. Indeed the gearbox represented by the spectrally-broadened fs laser's comb has sufficiently low noise that we in the optics community have abruptly found ourselves in the tough real world well known to our rf standards colleagues who perpetually work toward more coherent interrogation oscillators. As suggested earlier by Dehmelt, a trapped, laser-cooled single-ion con form an excellent basis for a fundamental new frequency standard system. Still, laser-cooled cold gas ensembles typically offer higher S/N and so better short-term stability, but at some cost in possible shifts of the resonance spectrum. In the effort to obtain excellent stability and reproducibility from simpler (gas cell) systems, emphasis is on getting smaller shifts in the process of observing the atomic resonance. Time-domain synchronization achieved by frequency-domain methods, brings a whole new order of experimental precision.
Citation
Optical Frequency Standards and Their Measurement
Publisher Info
Book Chapter ,

Keywords

laser frequency standards, optical frequency measurement, time domain synchronization

Citation

Hall, J. and Ye, J. (2008), Optical Frequency Standards and Their Measurement, Book Chapter , (Accessed March 2, 2024)
Created October 16, 2008