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.

Long-Term Carrier-Envelope Phase Conherence Achieved



S T. Cundiff


NIST researchers have reported a significant extension of the laser technology being developed for optical frequency metrology and optical atomic clocks. While frequency-domain stabilization had heretofore been the chief concern, there are additional applications - coherent control, signal processing, and high-rield physics - that also depend on long-term stabilization of the light field in the time domain. Recent measurements have demonstrated coherence times exceeding 100 s - corresponding to over 10 x1010 consecutive laser pulses - of the optical frequency carrier wave with respect to its pulse modulation.
Journal of Research (NIST JRES) -


optical clocks, optical frequency metrology


Cundiff, S. (2008), Long-Term Carrier-Envelope Phase Conherence Achieved, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD (Accessed April 15, 2024)
Created October 16, 2008