Broadband waveguiding through light-emitting strips directly written in a blank lithium fluoride crystal with a femtosecond laser is reported. Light guiding was observed at several optical wavelengths, from blue, 458 nm, to near-infrared, at 1550 nm. Visible photoluminescence spectra of the optically active F2 and F3+ color centers produced by the fs laser writing process were measured. The wavelength-dependent refractive index increase was estimated to be in the order of 10-3-10 -4 in the visible and near-infrared spectral intervals, which is consistent with the stable formation of point defects in LiF. © 2014 Chinese Physical Society and IOP Publishing Ltd.

Broadband optical active waveguides written by femtosecond laser pulses in lithium fluoride

Montereali, R.M.;Bonfigli, F.
2014

Abstract

Broadband waveguiding through light-emitting strips directly written in a blank lithium fluoride crystal with a femtosecond laser is reported. Light guiding was observed at several optical wavelengths, from blue, 458 nm, to near-infrared, at 1550 nm. Visible photoluminescence spectra of the optically active F2 and F3+ color centers produced by the fs laser writing process were measured. The wavelength-dependent refractive index increase was estimated to be in the order of 10-3-10 -4 in the visible and near-infrared spectral intervals, which is consistent with the stable formation of point defects in LiF. © 2014 Chinese Physical Society and IOP Publishing Ltd.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12079/2629
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