title: Portable IR dye laser optofluidic microresonator as a temperature and chemical sensor.
abstract: A compact and portable optofluidic microresonator has been fabricated and characterized. It is based on a Fabry-Perot microcavity consisting essentially of two tailored dichroic Bragg mirrors prepared by reactive magnetron sputtering deposition. The microresonator has been filled with an ethanol solution of Nile-Blue dye. Infrared laser emission has been measured with a pump threshold as low as 0.12 MW/cm2and an external energy conversion efficiency of 41%. The application of the device as a temperature and a chemical sensor is demonstrated. Small temperature variations as well as small amount of water concentrations in the liquid laser medium are detected as a shift of the resonant laser modes.
authors.forename: F
authors.initials: F
authors.lastname: Lahoz
authors.forename: I R
authors.initials: IR
authors.lastname: Martín
authors.forename: J
authors.initials: J
authors.lastname: Gil-Rostra
authors.forename: M
authors.initials: M
authors.lastname: Oliva-Ramirez
authors.forename: F
authors.initials: F
authors.lastname: Yubero
authors.forename: A R
authors.initials: AR
authors.lastname: Gonzalez-Elipe