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Related Experiment Video

Updated: Feb 2, 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

Single-laser, polarization-controlled optical sampling system.

Michael Kolano, Oliver Boidol, Daniel Molter

|November 25, 2018

Summary

This study introduces a novel single-laser polarization-controlled optical sampling (SLAPCOPS) system. It enables precise phase control for pump-probe measurements with high timing accuracy, eliminating the need for external delay lines.

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Last Updated: Feb 2, 2026

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Area of Science:

Optics and Photonics
Laser Physics
Ultrafast Science

Background:

Traditional optical sampling systems rely on complex setups like external delay lines or dual lasers.
These methods present limitations in terms of stability, complexity, and cost for advanced optical measurements.

Purpose of the Study:

To present a novel laser architecture for optical sampling that simplifies system design.
To enable precise phase control for pump-probe experiments using a single laser source.
To achieve high timing accuracy in optical sampling systems.

Main Methods:

Development of a polarization-multiplexed laser architecture.
Utilizing orthogonally polarized, oppositely propagating pulses within a single gain section.
Implementing a two-photon-absorption experiment to assess timing stability.

Main Results:

Demonstration of a novel laser architecture emitting two phase-controlled pulse trains from a single gain section.
Achieved a timing accuracy of 30 fs in pump-probe measurements.
Successfully reduced coupling effects between pulse trains through orthogonal polarization and opposite propagation.

Conclusions:

The single-laser polarization-controlled optical sampling (SLAPCOPS) approach offers a simplified and effective solution for optical sampling.
SLAPCOPS provides precise phase control and high timing stability, suitable for advanced ultrafast measurements.
This novel architecture overcomes limitations of traditional optical sampling systems.