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Publication Citation: Gain and Loss in active waveguides based on lithographically defined quantum dots

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Author(s): Kevin L. Silverman; Luis Miaja Avila; Varun B. Verma; Richard P. Mirin; James J. Coleman;
Title: Gain and Loss in active waveguides based on lithographically defined quantum dots
Published: June 01, 2014
Abstract: We report on the optical gain and loss of waveguides containing lithographically defined quantum dots. Lasing action has previously been demonstrated in a nominally identical structure. Measurements are made by monitoring the transmission of a resonant pulse while varying the injection current. We measure a maximum modal gain of 1.8 cm-1 at the peak of the ground state emission for a two-layer structure. The peak gain is insufficient for ground state lasing to be achieved in a structure with as-cleaved facets, but the gain per dot is comparable with that demonstrated in self- assembled quantum dots.
Citation: IEEE Photonics Technology Letters
Volume: 26
Issue: 13
Pages: pp. 1283 - 1286
Keywords: quantum dots; semiconductor optical amplifiers; electron beam lithography; nanostructures
Research Areas: Optics
DOI: http://dx.doi.org/10.1109/LPT.2014.2321140  (Note: May link to a non-U.S. Government webpage)
PDF version: PDF Document Click here to retrieve PDF version of paper (536KB)