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Optics Letters

Optics Letters


  • Vol. 26, Iss. 9 — May. 1, 2001
  • pp: 638–640

Nonstationary chaotic oscillations in lasers with frequency-shifted feedback

Kenju Otsuka, Jing-Yuan Ko, and Tamaki Kubota  »View Author Affiliations

Optics Letters, Vol. 26, Issue 9, pp. 638-640 (2001)

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The nonlinear dynamics of lasers with frequency-shifted delayed feedback are investigated. Resonant excitation of sustained relaxation oscillations by harmonic resonance is demonstrated. Self-induced switching between sustained relaxation oscillation and spiking oscillation is observed as the feedback coefficient is increased. Observed instabilities are well reproduced by numerical simulations of proposed model equations. A statistical analysis of this switching phenomenon is carried out numerically, and the results indicate that an inverse-power relation with the feedback coefficient determines the periods over which the system dwells in its relaxation-oscillation state.

© 2001 Optical Society of America

OCIS Codes
(140.3530) Lasers and laser optics : Lasers, neodymium
(190.2640) Nonlinear optics : Stimulated scattering, modulation, etc.
(270.3100) Quantum optics : Instabilities and chaos

Kenju Otsuka, Jing-Yuan Ko, and Tamaki Kubota, "Nonstationary chaotic oscillations in lasers with frequency-shifted feedback," Opt. Lett. 26, 638-640 (2001)

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