• Emeric Mercier
  • Chi-Hak Uy
  • Lionel Weicker
  • Martin Virte
  • D. Wolfersberger
  • M. Sciamanna
We report on a bifurcation mechanism following which an external-cavity laser diode emits regular oscillating output power at a high frequency. This frequency does not vary with the external-cavity length and it can be adjusted by varying the feedback strength. We observe this phenomenon numerically by investigating the external-cavity modes generated by a semiconductor laser subject to a phase-conjugate optical feedback. Particularly, we explore the effects of both the feedback rate and the time delay induced by the feedback on the frequency of the external-cavity modes. Counterintuitively, we evidence that having a short cavity does not necessarily yield oscillations at higher frequencies. We show that the key parameter in order to generate high-frequency solutions is the feedback rate. This parameter fixes the frequency of the solutions obtained independently of the time delay. We finally relate our observations to Hopf bifurcation phenomena.
Original languageEnglish
Article number061803
Number of pages5
JournalPhys. Rev. A
Volume94
Issue number6
DOIs
StatePublished - 28 Dec 2016

    Research areas

  • PHASE-CONJUGATE FEEDBACK, SEMICONDUCTOR-LASERS, DELAYED FEEDBACK, DYNAMICS, DIFURACTIONS, MODULATION, INTENSITY, STABILITY

ID: 29157167