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Proceedings Paper

An optofluidic FRET laser using quantum dots as donor
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Paper Abstract

The integration of optofluidic laser and FRET mechanism provides novel research frontiers, including sensitive biochemical analysis and novel photonic devices, such as on-chip coherent light sources and bio-tunable lasers. Here we investigated an optofluidic FRET laser using quantum dots (QDs) as FRET donors. We achieved lasing from Cy5 as the acceptor in the QD-Cy5 pair with excitation at 450 nm where Cy5 has negligible absorption by itself. The threshold was approximately 14 μJ/mm2. The demonstrated capability of QDs as the donor in a FRET laser greatly improves the versatility of optofluidic laser operation due to the broad and large absorption cross section of QDs in the blue and UV spectral region. The excitation efficiency of the acceptor molecules through FRET channel was also analyzed, showing that the energy transfer rate and the non-radiative Auger recombination rate of QDs plays a significant role in FRET laser performance.

Paper Details

Date Published: 22 April 2016
PDF: 7 pages
Proc. SPIE 9725, Frontiers in Biological Detection: From Nanosensors to Systems VIII, 97250I (22 April 2016); doi: 10.1117/12.2209722
Show Author Affiliations
Qiushu Chen, Univ. of Michigan (United States)
Alper Kiraz, Univ. of Michigan (United States)
Koç Univ. (Turkey)
Xudong Fan, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 9725:
Frontiers in Biological Detection: From Nanosensors to Systems VIII
Benjamin L. Miller; Brian T. Cunningham, Editor(s)

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