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Updated: Mar 31, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

Remote two-color optical-to-optical synchronization between two passively mode-locked lasers.

H Li, L-J Chen, H P H Cheng

|October 15, 2015

Summary

This summary is machine-generated.

We achieved precise remote synchronization of two optical oscillators using stabilized fiber links, enabling femtosecond timing distribution for advanced experiments like those at free-electron lasers (FELs). This method ensures high stability for critical scientific applications.

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Last Updated: Mar 31, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

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Published on: February 28, 2016

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Area of Science:

Optics and Photonics
Laser Physics
Synchronization Techniques

Background:

Precise timing is crucial for advanced scientific instruments like free-electron lasers (FELs).
Remote synchronization of optical oscillators over fiber links presents significant technical challenges.

Purpose of the Study:

To demonstrate remote, high-precision synchronization between a Ti:sapphire oscillator and an Er-doped fiber oscillator.
To establish a stable timing distribution system for femtosecond pump-probe experiments.

Main Methods:

Utilized balanced detection in both radio frequency (RF) and optical domains.
Employed a 360 m length-stabilized, dispersion-compensated fiber link for synchronization.
Locked an Er-doped fiber oscillator to a local RF reference clock.

Main Results:

Achieved remote synchronization of optical oscillator repetition rates with a drift of only 3.3 fs root mean square (rms) over 24 hours.
Successfully distributed 10 fs-level timing signals through stabilized fiber links.
Demonstrated a steady, remote two-color optical-to-optical synchronization.

Conclusions:

This synchronization method is a key advancement for integrated femtosecond fiber timing distribution systems.
The technique does not require X-ray pulses, simplifying experimental setups.
Enables sub-10-fs optical/X-ray pump-probe experiments with high precision.