Excitability in a quantum dot semiconductor laser with optical injection.
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.
Goulding
D
D
Tyndall National Institute, Lee Maltings, Cork, Ireland.
Hegarty
S P
SP
Rasskazov
O
O
Melnik
S
S
Hartnett
M
M
Greene
G
G
McInerney
J G
JG
Rachinskii
D
D
Huyet
G
G
D007834:Lasers; D008962:Models, Theoretical; D055095:Optics and Photonics; D045663:Quantum Dots; D012666:Semiconductors