• Nonlinear resonance phenomena of a doped fibre laser under cavity-loss modulation: Experimental demonstrations

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      https://www.ias.ac.in/article/fulltext/pram/075/05/0915-0921

    • Keywords

       

      Fibre lasers; chaos; modulation; nonlinear oscillators; optical bistability.

    • Abstract

       

      Our experiments with an erbium-doped fibre ring laser (CW, single transverse mode and multiaxial mode) with an intracavity LiNbO3 electro-optic modulator (EOM) display the characteristic features of a nonlinear oscillator (e.g., harmonic and period-2 sub-harmonic resonances) when the EOM driver voltage is modulated periodically. Harmonic resonance leads to period-1 bistability and hysteresis. Inside the period-2 sub-harmonic resonance region, the laser exhibits Feigenbaum sequence and generalized bistability.

    • Author Affiliations

       

      A Ghosh1 B K Goswami2 R Vijaya1 3

      1. Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
      2. Laser and Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
      3. Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208 016, India
    • Dates

       
  • Pramana – Journal of Physics | News

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