Carrier-envelope phase stabilization of an Er:Yb:glass laser via feed-forward technique

TL;DR

This paper demonstrates carrier-envelope phase stabilization of an Er:Yb:glass laser at 1.55 μm using a feed-forward technique, achieving ultralow jitter and long-term stability suitable for high-precision applications.

Contribution

It extends CEP stabilization methods to Er:Yb:glass lasers at telecom wavelengths with improved stability and long-term control using a feed-forward approach.

Findings

Ultralow timing jitter of 2.9 as achieved.

Long-term CEP stabilization over eight hours.

Potential for high-precision spectroscopy and fiber timing applications.

Abstract

Few-cycle pulsed laser technology highlights the need for control and stabilization of the carrier-envelope phase (CEP) for applications requiring shot-to-shot timing and phase consistency. This general requirement has been achieved successfully in a number of free space and fiber lasers via feedback and feed-forward methods. Expanding upon existing results, we demonstrate CEP stabilization through the feed-forward method applied to a SESAM mode-locked Er:Yb:glass laser at 1.55 um with a measured ultralow timing jitter of 2.9 as (1 Hz - 3 MHz) and long-term stabilization over a duration of eight hours. Single-digit attosecond stabilization at telecom wavelengths opens a new direction in applications requiring ultra-stable frequency and time precision such as high-resolution spectroscopy and fiber timing networks.