Abstract
Polarized absorption spectra are recorded from 400nm to 2400nm and analyzed within the framework of the Judd–Ofelt formalism. The best fit to the data is obtained by using the so-called “standard method” but by omitting the 3H4→3P2 hypersensitive absorption transition from the fitting procedure. Polarized and continuous-wave as well as time-resolved emission spectra are registered for the first time between 450nm and 1200nm. Fluorescence lifetime measurements are performed at different emission and for different excitation wavelengths. The analysis of the data confirms the low emission quantum efficiency of the (3P0,1,1I6) set of thermalized emitting levels and the predominance of the emissions coming from the 1D2 multiplet. It reveals the existence of an interesting near-infrared emission band coming from a 1D2→3F3,3F4 emission transition and extending from about 1000nm to 1150nm with a peak emission cross-section of 6.2×10−20cm2 at 1073nm.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
