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Instabilities in coupled photorefractive ring cavities and self-pumped phase conjugators

I. Mean-field model and linear stability analysis

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Abstract

We investigate the temporal instabilities of mode intensities in two coupled unidirectional photorefractive ring resonators. The first resonator is driven by an external laser beam via photorefractive two-wave mixing. The internal oscillating beam is then employed to drive the second ring resonator. The second ring resonator provides a nonlinear loss mechanism for the coupled system. Complete spatial-temporal equations for describing the coupled system are derived and mean-field approximation is employed to simplify the transient analysis. The results of linear stability analysis indicate that the coupled system exhibits instability in the off-state and steady-state operation. The instability is explained in terms of competition between nonlinear gain and loss. The results are presented and discussed.

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Authors and Affiliations

  1. Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu, Taiwan, ROC

    L.-K. Dai & Y.-S. Gou

  2. Rockwell International Science Center, 91360, Thousand Oaks, CA, USA

    C. Gu

  3. Department of Electrical and Computer Engineering, University of California, 93106, Santa Barbara, CA, USA

    P. Yeh

Authors
  1. L.-K. Dai
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  2. Y.-S. Gou
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  3. C. Gu
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  4. P. Yeh
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Part II on Numerical Results will be published in a forthcoming issue of Applied Physics B

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Dai, LK., Gou, YS., Gu, C. et al. Instabilities in coupled photorefractive ring cavities and self-pumped phase conjugators. Appl. Phys. B 54, 57–70 (1992). https://doi.org/10.1007/BF00331735

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  • DOI: https://doi.org/10.1007/BF00331735

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