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How lasing localized structures evolve out of passive mode locking.

M Marconi1, J Javaloyes2, S Balle3

  • 1Institut Non-Linéaire de Nice, Université de Nice Sophia Antipolis, CNRS UMR 7335, 06560 Valbonne, France.

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Summary
This summary is machine-generated.

Passive mode locking transforms laser pulses into individually addressable lasing localized structures. This occurs when cavity round-trip time exceeds gain recovery time and mode-locked solutions coexist with the zero-intensity state.

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Area of Science:

  • Laser Physics
  • Nonlinear Optics

Background:

  • Passive mode locking is a technique used to generate ultrashort pulses in lasers.
  • Understanding the dynamics of pulse formation and stability is crucial for laser applications.

Purpose of the Study:

  • To investigate the transformation of mode-locked laser pulses into time-localized structures.
  • To identify the conditions necessary for the formation of individually addressable lasing structures at low repetition rates.

Main Methods:

  • Theoretical analysis of laser dynamics under passive mode locking.
  • Investigating the interplay between cavity round-trip time and gain recovery time.
  • Examining the coexistence of mode-locked solutions with the zero-intensity state.

Main Results:

  • Demonstrated the transition from mode-locked pulses to lasing localized structures.
  • Identified two key conditions: cavity round-trip time >> gain recovery time, and coexistence of mode-locked and zero-intensity solutions.
  • Showcased the ability to achieve individually addressable pulses at arbitrarily low repetition rates.

Conclusions:

  • Passive mode locking can lead to the formation of stable, localized structures in laser output.
  • These structures allow for precise control and addressing of individual pulses.
  • The findings open possibilities for novel laser functionalities and applications requiring low repetition rates.