JORGE, K.C.ALVARADO, M.A.MELO, E.G.CARRENO, M.N.P.ALAYO, M.I.WETTER, N.U.2016-09-142016-09-142016JORGE, K.C.; ALVARADO, M.A.; MELO, E.G.; CARRENO, M.N.P.; ALAYO, M.I.; WETTER, N.U. Directional random laser source consisting of a HC-ARROW reservoir connected to channels for spectroscopic analysis in microfluidic devices. <b>Applied Optics</b>, v. 55, n. 20, p. 5393-5398, 2016. DOI: <a href="https://dx.doi.org/10.1364/AO.55.005393">10.1364/AO.55.005393</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/26626.1559-128Xhttp://repositorio.ipen.br/handle/123456789/26626Light sources are used in optofluidic devices for real-time system control and quantitative analysis of important process parameters. In this work, we present a random laser source using a hollow-core antiresonant reflecting optical waveguide (HC-ARROW) containing the gain media inside a reservoir to reduce dye bleaching, which is connected to microchannel waveguides to increase beam directionality. The device is pumped externally and emits a highly coherent and collimated laser beam.5393-5398openAccessdiffusionmultiple scatteringdye laserslaserslight sourcesArtigo de periódico205510.1364/AO.55.005393https://orcid.org/0000-0002-9379-953046.20