Excitability in a quantum dot semiconductor laser with optical injection |
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Authors: | Goulding D Hegarty S P Rasskazov O Melnik S Hartnett M Greene G McInerney J G Rachinskii D Huyet G |
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Affiliation: | Tyndall National Institute, Lee Maltings, Cork, Ireland. |
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Abstract: | We experimentally analyze the dynamics of a quantum dot semiconductor laser operating under optical injection. We observe the appearance of single- and double-pulse excitability at one boundary of the locking region. Theoretical considerations show that these pulses are related to a saddle-node bifurcation on a limit cycle as in the Adler equation. The double pulses are related to a period-doubling bifurcation and occur on the same homoclinic curve as the single pulses. |
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