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7 September 2006 Single-mode and tunable microfluidic dye lasers
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Proceedings Volume 6329, Optofluidics; 632901 (2006)
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States
We present a technology for miniaturized, chip-based liquid dye lasers, which may be integrated with microfluidic networks and planar waveguides without addition of further process steps. The microfluidic dye lasers consist of a microfluidic channel with an embedded optical resonator. The lasers are operated with Rhodamine 6G laser dye dissolved in a suitable solvent, such as ethanol or ethylene glycol, and optically pumped at 532 nm with a pulsed, frequency doubled Nd:YAG laser. Both vertically and laterally emitting devices are realized. A vertically emitting Fabry-Perot microcavity laser is integrated with a microfluidic mixer, to demonstrate realtime wavelength tunability. Two major challenges of this technology are addressed: lasing threshold and fluidic handling. Low threshold, in-plane emission and integration with polymer waveguides and microfluidic networks is demonstrated with distributed feed-back lasers. The challenge of fluidic handling is addressed by hybridization with mini-dispensers, and by applying capillary filling of the laser devices.
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A. Kristensen, S. Balslev, M. Gersborg-Hansen, B. Bilenberg, T. Rasmussen, and D. Nilsson "Single-mode and tunable microfluidic dye lasers", Proc. SPIE 6329, Optofluidics, 632901 (7 September 2006);

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