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.

Active Synchronization and Carrier Phase Locking of Two Separate Mode-Locked Femtosecond Lasers

Published

Author(s)

R K. Shelton, L -. Ma, H C. Kapteyn, M M. Murnane, J L. Hall, Jun Ye

Abstract

Two independent mode-locked femtosecond lasers are synchronized to an unprecedented precision. The rms timing jitter between the lasers is 4.3 fs observed within a 160 Hz bandwidth over tens of seconds, or 26 fs within a 50 kHz bandwidth. Novel multi-stage phase locked loops help to preserve this ultrahigh timing resolution while setting on arbitrary delay between the two pulse trains (0-5) ns). Under such synchronization, phase locking between the carrier frequencies of the two fs lasers has been achieved. We also demonstrate that the same level of synchronization can be achieved with two lasers at different repetition frequencies.
Citation
Journal of Modern Optics

Keywords

carrier phase locking, femtosecond, synchronization

Citation

Shelton, R. , Ma, L. , Kapteyn, H. , Murnane, M. , Hall, J. and Ye, J. (2021), Active Synchronization and Carrier Phase Locking of Two Separate Mode-Locked Femtosecond Lasers, Journal of Modern Optics (Accessed February 24, 2024)
Created October 12, 2021