Related Experiment Video
Updated: Nov 15, 2025
08:39
Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
10.1K
Manipulation of temporal localized structures in a vertical external-cavity surface-emitting laser with optical
Optics Letters
|March 2, 2021
Summary
Optical feedback controls pulse patterns in lasers. By adjusting timing, feedback can select specific harmonic pulse arrangements, a finding supported by theoretical analysis and experiments.
Area of Science:
- Laser Physics
- Nonlinear Optics
- Quantum Optics
Background:
- Passively mode-locked lasers generate ultrashort pulses.
- Surface-emitting lasers offer compact and scalable solutions.
- Temporal localized structures represent complex dynamical phenomena.
Purpose of the Study:
- Investigate the influence of optical feedback on laser dynamics.
- Analyze the selection mechanisms of multistable pulse arrangements.
- Explore the role of gain depletion in symmetry breaking.
Main Methods:
- Experimental analysis of an external-cavity passively mode-locked surface-emitting laser.
- Varying the ratio of cavity round trip time to feedback delay.
- Theoretical modeling to reproduce experimental observations.
Main Results:
- Optical feedback acts as a solution selector for pulse patterns.
- Feedback can either reinforce or hinder specific harmonic arrangements.
- Asymmetrical resonance tongues observed due to parity symmetry breaking.
Conclusions:
- Optical feedback is a critical parameter for controlling laser dynamics.
- Gain depletion significantly impacts the symmetry of laser solutions.
- The study provides insights into the complex behavior of mode-locked lasers.
