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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 2 — Jan. 23, 2006
  • pp: 702–709

Phase synchronization of chaotic lasers

Dong Ik Kim, Dae-Sic Lee, Young-Jai Park, Gyu Ug Kim, and Chil-Min Kim  »View Author Affiliations

Optics Express, Vol. 14, Issue 2, pp. 702-709 (2006)

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We experimentally investigate phase synchronization between two electronically coupled diode laser pumped Nd:YAG lasers. As the coupling strength increases, the phase of the two chaotic laser outputs develops from a nonsynchronous state to a phase synchronous one through a phase jump state. We find that there are 2π phase jumps and a π/2 phase shift between the two laser outputs unlike in optically coupled Nd:YAG lasers. To clarify the transition to phase synchronization with a π/2 phase shift, we analyze the phenomenon of phase synchronization by using a phase portrait, phase difference dynamics, and frequency variation depending on the coupling strength and obtain the scaling rule of the average phase locking time in the intermittent phase jump state.

© 2006 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.1540) Lasers and laser optics : Chaos
(140.3480) Lasers and laser optics : Lasers, diode-pumped

Dong Ik Kim, Dae-Sic Lee, Young-Jai Park, Gyu Ug Kim, and Chil-Min Kim, "Phase synchronization of chaotic lasers," Opt. Express 14, 702-709 (2006)

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