Fluorophosphate glasses of composition P2O5-K2O-MgO)-A1(2)O(3)-A1F(3) and P2O5-K2O-MgO-A1(2)O(3)-BaF2 were prepared with different Nd3+ ion concentrations. The absorption and emission spectra in the UV-VIS-NIR region were measured for these glasses. Judd-Ofelt analysis has been carried out using the absorption spectra of 1.0 mol% Nd3+-doped glasses to evaluate the radiative properties for some luminescent levels of the Nd3+ ion. The stimulated emission cross-sections of the F-4(3/2) -> I-4(11/2) laser transition for the present glasses are found to be higher than for other Nd3+-doped glasses. Branching ratio calculations also revealed the potentiality of the F-4(3/2) I-4(11/2) transition for laser action in these glasses. The observed concentration quenching of the lifetime of the 4 F3/2 level is explained as a result of cross-relaxation process between the Nd3+ ions.

Laser transition characteristics of Nd3+-doped fluorophosphate laser glasses

SPEGHINI, Adolfo;BETTINELLI, Marco Giovanni
2007-01-01

Abstract

Fluorophosphate glasses of composition P2O5-K2O-MgO)-A1(2)O(3)-A1F(3) and P2O5-K2O-MgO-A1(2)O(3)-BaF2 were prepared with different Nd3+ ion concentrations. The absorption and emission spectra in the UV-VIS-NIR region were measured for these glasses. Judd-Ofelt analysis has been carried out using the absorption spectra of 1.0 mol% Nd3+-doped glasses to evaluate the radiative properties for some luminescent levels of the Nd3+ ion. The stimulated emission cross-sections of the F-4(3/2) -> I-4(11/2) laser transition for the present glasses are found to be higher than for other Nd3+-doped glasses. Branching ratio calculations also revealed the potentiality of the F-4(3/2) I-4(11/2) transition for laser action in these glasses. The observed concentration quenching of the lifetime of the 4 F3/2 level is explained as a result of cross-relaxation process between the Nd3+ ions.
optical spectroscopy; absorption; lasers
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/302420
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 20
  • ???jsp.display-item.citation.isi??? 19
social impact