Polarization dynamics and low-frequency fluctuations in vertical-cavity surface-emitting lasers subjected to optical feedback

T. Ackemann, M. Sondermann, A. Naumenko, N. A. Loiko

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The dynamics of vertical-cavity surface-emitting lasers with isotropic optical feedback from a distant reflector is studied experimentally and numerically. Low-frequency fluctuations with sudden drop-outs of power are found to be qualitatively independent of the amount of excitation of the second polarization component. The latter is shown to be controlled to a great extent by the intrinsic dichroism of the solitary laser.The experimental findings are in very good qualitative agreement with simulations. The characteristic features of a doublet in the radio-frequency spectra around the external-cavity roundtrip frequency are discussed.

Original languageEnglish
Pages (from-to)739-746
Number of pages8
JournalApplied Physics B: Lasers and Optics
Issue number8
Publication statusPublished - 1 Dec 2003


  • optical feedback
  • weak mode
  • polarisation dynamic
  • phase anisotropy
  • cross power spectrum

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