Waveguiding light-emitting strips have been written in a blank LiF crystal with a femtosecond laser, by translating the sample under the pulsed focused beam. Light guiding through these buried micro-structures was observed at several wavelengths between 458 and 1550 nm. Visible photoluminescence spectra of aggregate F2 and F3+ laser active color centers were measured. The refractive index increase, estimated of the order of 10-4 in the visible and near-infrared spectral intervals, is consistent with the stable formation of electronic point defects in LiF. These results are promising for the realization of miniaturized optical waveguiding solid-state amplifiers and lasers based on color centers. © 2014 AEIT.
|Publication status||Published - 2014|
|Event||2014 Fotonica AEIT Italian Conference on Photonics Technologies, Fotonica AEIT 2014 - , Italy|
Duration: 1 Jan 2014 → …
|Conference||2014 Fotonica AEIT Italian Conference on Photonics Technologies, Fotonica AEIT 2014|
|Period||1/1/14 → …|
All Science Journal Classification (ASJC) codes
Montereali, R. M., Bonfigli, F., Michelotti, F., Gomes, A. S. L., Chiamenti, I., & Kalinowski, H. J. (2014). Advanced characterization of color centers lightemitting waveguides induced in lithium fluoride crystals by femtosecond laser. Paper presented at 2014 Fotonica AEIT Italian Conference on Photonics Technologies, Fotonica AEIT 2014, Italy. https://doi.org/10.1109/Fotonica.2014.6843887