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Optofluidic Circular Grating Distributed Feedback Dye Laser

Research Area: Nanophotonics Year: 2009
Type of Publication: Article Keywords: distributed feedback lasers, dye lasers, laser cavity resonators, microfluidics, micro-optomechanical devices, optical pumping, polymers, soft lithography, surface emitting lasers
Authors: Chen, Yan; Li, Zhenyu; Henry, David; Scherer, Axel
Journal: Applied Physics Letters Volume: 95
Number: 3 Pages: 031109
Month: July
We demonstrate an optically pumped surface emitting optofluidic dye laser using a second-order circular grating distributed feedback resonator. We present a composite bilayer soft lithography technique specifically developed for the fabrication of our dye laser and investigate a hybrid polymer material system [poly(dimethylsiloxane)/perfluoropolyether] to construct high-resolution Bragg gratings. Our lasers emit single frequency light at low lasing thresholds of 6 μJ/mm2. These optofluidic dye lasers can serve as low-cost and compact coherent light sources that are fully integrated within microfluidic analysis chips and provide an efficient approach to construct compact spectroscopy systems.
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