High-Brightness White-Light Source Based on Up-Conversion Phosphors
Abbreviated Journal Title
J. Disp. Technol.
Displays; fluorescence spectroscopy; light sources; luminescence; optical frequency up-conversion (UC); optical scattering; rare earth; (RE) compounds; Engineering, Electrical & Electronic; Optics; Physics, Applied
We report the implementation of a new, high brightness, high efficiency white-light source based on up-conversion phosphors. Up-conversion materials absorb near infrared light and re-emit in red, green, and blue. It is possible to combine these colors to create a white-light source. Such a source has the same appealing characteristics as those reported for up-conversion displays: very high brightness operation without damage to the emitters, long lifetimes, and efficiencies comparable to those of existing technologies. In addition, they offer simplicity of fabrication and a variety of operating modes. Here we demonstrate a 7-lm/W D65 white light emitter yielding 2 kcd/m(2) on a simple diffuser.
Journal of Display Technology
"High-Brightness White-Light Source Based on Up-Conversion Phosphors" (2006). Faculty Bibliography 2000s. 6439.