Abstract
Research activities concerned with colour centres in alkali halide films started recently. The use of versatile, well-assessed, and low-cost fabrication techniques consisting in physical vapour deposition of Lithium Fluoride, LiF, films combined with electronbeam direct writing lithographic processes allows the realisation of optically confined active structures, like broad-band emitters, channel waveguides and optical microcavities operating in the visible spectral range. Promising results have been obtained in the generation, amplification and waveguiding of visible light in LiF films, where the efficient formation of stable laser active colour centres by low energy electron beam irradiation induces also a local modification of the refractive index. A brief overview of the investigated optical properties was provided together with a short discussion about the perspectives of applications in miniaturised light sources.
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Montereali, R.M. (2003). Confined Structures Based on Point Defects in Lithium Fluoride Films: Optical Properties and Applications. In: Di Bartolo, B. (eds) Spectroscopy of Systems with Spatially Confined Structures. NATO Science Series, vol 90. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0287-5_20
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DOI: https://doi.org/10.1007/978-94-010-0287-5_20
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