Strong optical injection and the differential gain in a quantum dash laser

Strong optical injection and the differential gain in a quantum dash laser

By optically injecting a quantum dash laser and simultaneously producing a significant lowering of the device threshold, a large enhancement in the differential gain is realized. This effect is observed by way of a dramatic reduction in the linewidth enhancement factor and a large increase in the 3-...

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Veröffentlicht in:Optics express 2014-03, Vol.22 (6), p.7222-7228
Hauptverfasser: Lester, Luke F, Naderi, Nader A, Grillot, Frederic, Raghunathan, Ravi, Kovanis, Vassilios
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Optics
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container_end_page 7228
container_issue 6
container_start_page 7222
container_title Optics express
container_volume 22
creator Lester, Luke F
Naderi, Nader A
Grillot, Frederic
Raghunathan, Ravi
Kovanis, Vassilios
description By optically injecting a quantum dash laser and simultaneously producing a significant lowering of the device threshold, a large enhancement in the differential gain is realized. This effect is observed by way of a dramatic reduction in the linewidth enhancement factor and a large increase in the 3-dB modulation bandwidth, especially as the injection wavelength is blue-shifted. Compared to its free-running value, a 50X improvement in the laser's differential gain is found.
doi_str_mv 10.1364/OE.22.007222
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subjects Engineering Sciences
Optics
Photonic
title Strong optical injection and the differential gain in a quantum dash laser
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