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

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Mode-locking in quadratically nonlinear waveguide arrays.

Mahmut Bağci, J Nathan Kutz

|October 27, 2022

Summary

This summary is machine-generated.

Stable optical mode-locking (ML) is achievable in quadratically nonlinear waveguide arrays (QWGAs). This research demonstrates that these materials can support robust ML states for diverse applications.

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Area of Science:

Nonlinear optics
Photonics
Theoretical physics

Background:

Optical mode-locking (ML) is crucial for generating ultrashort laser pulses.
Waveguide arrays offer a platform for controlling light propagation.
Quadratic nonlinearities present unique opportunities for light manipulation.

Purpose of the Study:

To theoretically model and investigate optical mode-locking (ML) in quadratically nonlinear waveguide arrays (QWGAs).
To determine the conditions for stable ML states in these systems.
To assess the suitability of QWGAs for practical mode-locking applications.

Main Methods:

Development of a two-dimensional theoretical model for QWGAs.
Obtaining steady-state solutions using a modified pseudo-spectral renormalization algorithm.
Investigating mode-locking dynamics via direct simulation and linear stability analysis.

Main Results:

Stable mode-locking of elliptic steady-state solutions was demonstrated.
Achievability of stable ML states across a wide range of parameters was shown.
The findings suggest robust ML is possible in QWGAs.

Conclusions:

Quadratic nonlinear materials are well-suited for creating stable mode-locked states.
QWGAs provide a promising platform for advanced photonic devices.
The theoretical model and analysis offer insights into nonlinear light propagation.