Spectroscopic investigation of Nd3+ and Yb3+ in Ca4GdO(BO3)3 crystals

Analysis of green luminescent Tb3+:Ca4GdO(BO3)3 powder phosphor

“…The vibrational mode of Tb-O band has been found at 467 cm À1 . The above assignments have been made for Tb 3+ :Ca 4 GdO(BO 3 ) 3 phosphor and these results, thus, obtained are found to be quite clearly comparable with the results that are earlier reported in literature [35][36][37][38] and the assignment details are documented in Table 1. The excitation spectrum of Tb 3+ : Ca 4 GdO(BO 3 ) 3 powder phosphor is shown in Fig.…”

Spectral and structural studies of GdCOB and YCOB crystals

“…A strong energy transfer, enhanced by temperature, from Yb 2 to Yb 1 takes place. Using the selective excitation and emission data and the phonons obtained from Raman or IR spectra [13,14] electronic lines were identified (marked by in Fig. 2) and energy levels diagrams for Yb 1 and Yb 2 in GdCOB were proposed (Fig.…”

Simultaneous Observation of Green Multiphoton Upconversion and Red and Blue NLO Processes from Polymeric Terbium(III) Complexes

“…[5] Although there have been reports on lanthanide complexes that display second harmonic generation, these have been limited and focused only on glassy doped lanthanide materials. [6] In recent years, our group [7] and others [8] have investigated several high-order multiphoton processes from organic ligands and metal complexes. Herein we report, to the best of our knowledge, the first observation of rare multiphoton upconversion emission from a lanthanide complex as well as SHG and THG transmission phenomena, which occur simultaneously from the same excitation source in the IR region at l % 1.26 and 1.34 mm.…”