Curso online LÁSERES BASADOS EN MATERIALES FOTÓNICOS AUTOENSAMBLADOS

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LáSERES BASADOS EN MATERIALES FOTóNICOS AUTOENSAMBLADOS

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Ordinary lasers comprise a pumping systems, a cavity and a gain medium. The cavity provides feed back and selects working modes and therefore set the colour of the emission. On the other hand random lasers are typically formed by a random assembly of optical scatters with optical gain added. Multiple light scattering replaces the standard optical cavity of traditional lasers and the interplay between gain and scattering determines its unique properties. Random lasers studied to date, consisted of irregularly shaped or sized polydisperse scatters, with some average scattering strength roughly constant over the gain frequency window and therfore emit at the peak of the gain curve. We consider the case where the scattering is resonant by using photonic glasses that can sustain scattering resonances [1]. These resonances manifest as variations in scattering mean free path and can thus be thought of as the loss/gain knob. The unique resonant balance in this material allows to control the la

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Láseres basados en materiales fotónicos autoensamblados


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Universidad Politécnica de Madrid