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.
Original language | English (US) |
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Pages (from-to) | 4590-4595 |
Number of pages | 6 |
Journal | Lab on a chip |
Volume | 14 |
Issue number | 24 |
DOIs | |
State | Published - Dec 21 2014 |
Bibliographical note
Publisher Copyright:© The Royal Society of Chemistry 2014.