title: Injection-induced, tunable all-optical gating in a two-state quantum dot laser.
abstract: We demonstrate a tunable all-optical gating phenomenon in a single-section quantum dot laser. The free-running operation of the device is emission from the excited state. Optical injection into the ground state of the material can induce a switch to emission from the ground state with complete suppression of the excited state. If the master laser is detuned from the ground-state emitting frequency, a periodic train of ground-state dropouts can be obtained. These dropouts act as gates for excited-state pulsations: during the dropout, the gate is opened and gain is made available for the excited state, and the gate is closed again when the dropout ends. Numerical simulations using a rate equation model are in excellent agreement with experimental results.
authors.forename: E A
authors.initials: EA
authors.lastname: Viktorov
authors.forename: I
authors.initials: I
authors.lastname: Dubinkin
authors.forename: N
authors.initials: N
authors.lastname: Fedorov
authors.forename: T
authors.initials: T
authors.lastname: Erneux
authors.forename: B
authors.initials: B
authors.lastname: Tykalewicz
authors.forename: S P
authors.initials: SP
authors.lastname: Hegarty
authors.forename: G
authors.initials: G
authors.lastname: Huyet
authors.forename: D
authors.initials: D
authors.lastname: Goulding
authors.forename: B
authors.initials: B
authors.lastname: Kelleher