Optical properties of Nd3+-doped fluorophosphate glasses

Abstract

31Optical absorption spectra of Nd -doped fluorophosphate glasses of the type 75NaPO -24AF-1NdF (A5Li, Na, K) and of the type phenomenological Judd-Ofelt intensity parameters V (l52, 4 and 6). With the knowledge of these intensity parameters, the probability l for spontaneous emission, the branching ratios and the radiative lifetime are calculated. The relation between the spectral intensities and the glass composition is discussed. The optical properties of the fluorophosphate glasses are compared with those of phosphate and fluoride glasses. It is shown that the choice of the cation only has a minor influence on the spectral intensities. The spectral behaviour of the fluorophosphate glasses is intermediate between the spectral behaviour of pure phosphate and fluoride glasses. © 1998 Elsevier Science S.A.

Spectroscopic properties of trivalent lanthanide ions in fluorophosphate glasses

“…The absorption spectrum 4 was not used in the ®tting procedure (see explanation in the text). of Nd 3 in 75NaPO 3 ±24CaF 2 ±1NdF 3 glass is similar to those in comparable¯uorophosphate glasses [30]. No transitions could be observed in the visible part of luminescence spectrum of this matrix (the near infrared region is not accessible with our equipment).…”

Spectroscopic and 1.06μm laser properties of Nd3+-doped K–Sr–Al phosphate and fluorophosphate glasses

“…1 shows the optical absorption spectra of the 1.0 mol% Nd 3+ -doped PKSAN10, PKSAFN10 and PKSABFN10 glasses recorded in the 350-950 nm spectral region at room temperature along with the band assignments. The location and assignments of the absorption bands have been made as carried out in the earlier studies of Nd 3+ -doped glasses [10,[18][19][20][21]. Fifteen absorption bands have been observed and are assigned to the transitions from the 4 I 9/2 ground state to various excited states.…”

Judd–Ofelt intensity parameters of trivalent lanthanide ions in a NaPO3–BaF2 based fluorophosphate glass

“…What is important, is the nature of the coordinating anions around the lanthanide ion. The spectroscopic behaviour of lanthanide ions in a fluorophosphate glass is intermediate between the behaviour in fluoride and phosphate glasses [19]. the condition that the environment of the lanthanide ion is 5.…”

“…This makes the determination of glass is very similar to those in comparable fluorophos-31 the three intensity parameters impossible. Pm is radioacphate glasses [19]. and therefore much weaker.…”