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Suppressing spatiotemporal lasing instabilities with wave-chaotic microcavities.

Stefan Bittner1, Stefano Guazzotti2, Yongquan Zeng3

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Summary
This summary is machine-generated.

We demonstrate a method to suppress spatiotemporal instabilities in lasers using wave-chaotic cavities. This approach disrupts filament formation, leading to stable laser dynamics and improved performance.

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Area of Science:

  • Nonlinear Optics
  • Laser Physics
  • Wave Phenomena

Background:

  • Spatiotemporal instabilities, arising from nonlinearity, cause filamentation and chaos in broad-area semiconductor lasers.
  • These instabilities degrade laser performance and are difficult to control, limiting high-power laser applications.

Purpose of the Study:

  • To demonstrate a novel method for suppressing spatiotemporal instabilities in semiconductor lasers.
  • To investigate the use of wave-chaotic cavities as a means to control nonlinear laser dynamics.

Main Methods:

  • Utilizing wave-chaotic or disordered optical cavities.
  • Leveraging the interference of multiple waves with random phases within the cavity.
  • Analyzing the disruption of self-organized structures like filaments.

Main Results:

  • Successful suppression of spatiotemporal instabilities was achieved.
  • Stable lasing dynamics were observed in the presence of wave-chaotic cavities.
  • The formation and growth of nonlinear instabilities were prevented.

Conclusions:

  • Wave-chaotic cavities offer a general and robust scheme to control nonlinear instabilities in lasers.
  • This method enhances the stability and performance of high-power semiconductor lasers.
  • The findings have broad implications for various high-power laser systems.