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Issue 24, 2014
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Optofluidic lasers with a single molecular layer of gain

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Abstract

We achieve optofluidic lasers with a single molecular layer of gain, in which green fluorescent protein, dye-labeled bovine serum albumin, and dye-labeled DNA, are used as the gain medium and attached to the surface of a ring resonator via surface immobilization biochemical methods. It is estimated that the surface density of the gain molecules is on the order of 1012 cm−2, sufficient for lasing under pulsed optical excitation. It is further shown that the optofluidic laser can be tuned by energy transfer mechanisms through biomolecular interactions. This work not only opens a door to novel photonic devices that can be controlled at the level of a single molecular layer but also provides a promising sensing platform to analyze biochemical processes at the solid–liquid interface.

Graphical abstract: Optofluidic lasers with a single molecular layer of gain

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Publication details

The article was received on 25 Jul 2014, accepted on 02 Oct 2014 and first published on 02 Oct 2014


Article type: Communication
DOI: 10.1039/C4LC00872C
Citation: Lab Chip, 2014,14, 4590-4595
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    Optofluidic lasers with a single molecular layer of gain

    Q. Chen, M. Ritt, S. Sivaramakrishnan, Y. Sun and X. Fan, Lab Chip, 2014, 14, 4590
    DOI: 10.1039/C4LC00872C

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