Nanobeam photonic crystal cavity quantum dot laser

Details Nanobeam photonic crystal cavity quantum dot laser Nanobeam photonic crystal cavity quantum dot laser

2010-03-05

arxiv.org/abs/1003.1176v1

Physics

Optics

8 pages; 6 figures

Scientific paper

The lasing behavior of one dimensional GaAs nanobeam cavities with embedded InAs quantum dots is studied at room temperature. Lasing is observed throughout the quantum dot PL spectrum, and the wavelength dependence of the threshold is calculated. We study the cavity lasers under both 780 nm and 980 nm pump, finding thresholds as low as 0.3 uW and 19 uW for the two pump wavelengths, respectively. Finally, the nanobeam cavity laser wavelengths are tuned by up to 7 nm by employing a fiber taper in near proximity to the cavities. The fiber taper is used both to efficiently pump the cavity and collect the cavity emission.

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