Injection-induced, tunable all-optical gating in a two-state quantum dot laser
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 suppr...
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| Veröffentlicht in: | Optics letters 2016-08, Vol.41 (15), p.3555-3558 |
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| container_title | Optics letters |
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| creator | Viktorov, E A Dubinkin, I Fedorov, N Erneux, T Tykalewicz, B Hegarty, S P Huyet, G Goulding, D Kelleher, B |
| description | 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. |
| doi_str_mv | 10.1364/OL.41.003555 |
| format | Article |
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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. 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| title | Injection-induced, tunable all-optical gating in a two-state quantum dot laser |
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