Thermal effect of laser beam on Solid-State Lighting Application
Résumé
Solid-state lighting devices become more common nowadays, taking the place of old conventional lighting sources such as incandescent lamps. A new, emerging and highly promising solid-state light source is the laser-driven phosphor conversion device. In this study, we investigate the thermal effect the laser beam has on the phosphor and specifically on the phosphor matrix, which in our case is based on silicon. Such a light source works by converting the laser beam to white light, using a suitable phosphor for the conversion process. Typical samples are phosphors like: YAG:Ce3+, GYAG:Ce3+ with nitride, with the excitation source being a blue 450 nm or a violet 405 nm laser diode. In this work, we simulate the thermal effect of the laser beam on a typical phosphor sample and how some beam characteristics like the beam radius affect the sample thermally.
Domaines
Optique / photoniqueOrigine | Fichiers produits par l'(les) auteur(s) |
---|