• Long-time dynamics of a vertical-cavity surface-emitting laser under optical feedback

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    • Keywords


      Vertical-cavity surface-emitting laser; optical feedback; chaos

    • Abstract


      External optical feedback in vertical-cavity surface-emitting laser (VCSEL) is found to influence its output intensity.We studied the effect of the amount of total output polarisation feedback and polarisation-selective feedback on the output intensities of a VCSEL for a low-resolution sampling and for long temporal duration. A 40 μs resolution time-series correlation analysis is performed for different feedback conditions and the characteristicdynamics is investigated.We found a correlated fluctuation in VCSEL output for a moderate amount of total feedbackand polarised feedback. The period of such fluctuations is found to be reduced from total feedback to the polarised feedback of the system.

    • Author Affiliations



      1. Department of Physics,Government College Kanjiramkulam,Kanjiramkulam,Thiruvananthapuram 695 524, India
      2. R C Bose Centre for Cryptology and Security, Indian Statistical Institute Kolkata, 203 Barrackpore Trunk Road, Kolkata 700 108, India
      3. School of Physics, University of Hyderabad, Gachibowli, Hyderabad 500 046, India
    • Dates

  • Pramana – Journal of Physics | News

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