Related Experiment Video
Updated: May 1, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Relaxation and square-wave oscillations in a semiconductor laser with polarization rotated optical feedback
Abstract:
The rate equations for a laser with a polarization rotated optical feedback are investigated both numerically and analytically. The frequency detuning between the polarization modes is now taken into account and we review all earlier studies in order to motivate the range of values of the fixed parameters. We find that two basic Hopf bifurcations leading to either stable sustained relaxation or square-wave oscillations appear in the detuning versus feedback rate diagram. We also identify two key parameters describing the differences between the total gains of the two polarization modes and discuss their effects on the periodic square-waves.
Related Concept Videos
Oscillations In An LC Circuit
Standing Waves in a Cavity
Atomic Nuclei: Nuclear Relaxation Processes

