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Investigation of transition dynamics in a quantum-dot laser optically pumped by femtosecond pulses

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6 Author(s)
Rafailov, E.U. ; Division of Electronic Engineering and Physics, University of Dundee, Dundee DD1 4HN, United Kingdom ; McRobbie, A.D. ; Cataluna, M.A. ; OFaolain, L.
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The behavior of a quantum-dot edge-emitting laser, optically pumped by femtosecond pulses, has been investigated. It has been observed that pulses generated by the laser from ground-state transitions have longer durations than those generated from the excited states. Interestingly, the shortest pulses were generated when the transitions from the first excited-state were dominant.

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Applied Physics Letters  (Volume:88 ,  Issue: 4 )