Anomalous dynamic characteristics of semiconductor quantum-dot lasers generating on two quantum states

G. S. Sokolovskii; M. A. Cataluna; A. G. Deryagin; V. I. Kuchinskii; I. I. Novikov; M. V. Maksimov; A. E. Zhukov; V. M. Ustinov; W. Sibbett; E. U. Rafailov

doi:10.1134/S1063785007010026

Anomalous dynamic characteristics of semiconductor quantum-dot lasers generating on two quantum states

G. S. Sokolovskii, M. A. Cataluna, A. G. Deryagin, V. I. Kuchinskii, I. I. Novikov, M. V. Maksimov, A. E. Zhukov, V. M. Ustinov, W. Sibbett, E. U. Rafailov

Aston Institute of Photonic Technologies (AiPT)

Research output: Contribution to journal › Article › peer-review

Abstract

Dynamics of the emission spectra of semiconductor quantum dot (QD) lasers generating on two quantum states has been experimentally studied. Being pumped with 30-ns current pulses, a QD laser ceased to generate 2–5 ns after switch-on and exhibited a pause up to 10 ns or longer, depending on the pumping pulse amplitude. After the subsequent switch-on, the laser generated short (200–300 ps) pulses of emission from the excited state of QDs followed by minima of comparable duration (dark pulses) corresponding to the ground-state emission. This behavior is explained in terms of the laser Q-switching due to the charge carrier density redistribution between the excited and ground states.

Original language	English
Pages (from-to)	4-7
Journal	Technical Physics Letters
Volume	33
DOIs	https://doi.org/10.1134/S1063785007010026
Publication status	Published - Jan 2007

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abstract = "Dynamics of the emission spectra of semiconductor quantum dot (QD) lasers generating on two quantum states has been experimentally studied. Being pumped with 30-ns current pulses, a QD laser ceased to generate 2–5 ns after switch-on and exhibited a pause up to 10 ns or longer, depending on the pumping pulse amplitude. After the subsequent switch-on, the laser generated short (200–300 ps) pulses of emission from the excited state of QDs followed by minima of comparable duration (dark pulses) corresponding to the ground-state emission. This behavior is explained in terms of the laser Q-switching due to the charge carrier density redistribution between the excited and ground states.",

author = "Sokolovskii, {G. S.} and Cataluna, {M. A.} and Deryagin, {A. G.} and Kuchinskii, {V. I.} and Novikov, {I. I.} and Maksimov, {M. V.} and Zhukov, {A. E.} and Ustinov, {V. M.} and W. Sibbett and Rafailov, {E. U.}",

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AU - Sokolovskii, G. S.

AU - Cataluna, M. A.

AU - Deryagin, A. G.

AU - Kuchinskii, V. I.

AU - Novikov, I. I.

AU - Maksimov, M. V.

AU - Zhukov, A. E.

AU - Ustinov, V. M.

AU - Sibbett, W.

AU - Rafailov, E. U.

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N2 - Dynamics of the emission spectra of semiconductor quantum dot (QD) lasers generating on two quantum states has been experimentally studied. Being pumped with 30-ns current pulses, a QD laser ceased to generate 2–5 ns after switch-on and exhibited a pause up to 10 ns or longer, depending on the pumping pulse amplitude. After the subsequent switch-on, the laser generated short (200–300 ps) pulses of emission from the excited state of QDs followed by minima of comparable duration (dark pulses) corresponding to the ground-state emission. This behavior is explained in terms of the laser Q-switching due to the charge carrier density redistribution between the excited and ground states.

AB - Dynamics of the emission spectra of semiconductor quantum dot (QD) lasers generating on two quantum states has been experimentally studied. Being pumped with 30-ns current pulses, a QD laser ceased to generate 2–5 ns after switch-on and exhibited a pause up to 10 ns or longer, depending on the pumping pulse amplitude. After the subsequent switch-on, the laser generated short (200–300 ps) pulses of emission from the excited state of QDs followed by minima of comparable duration (dark pulses) corresponding to the ground-state emission. This behavior is explained in terms of the laser Q-switching due to the charge carrier density redistribution between the excited and ground states.

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Anomalous dynamic characteristics of semiconductor quantum-dot lasers generating on two quantum states

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