In this paper, we present a comprehensive analytical model of Tm able to take into account direct cross-relaxation process. We show that by using an appropriate set of parameters the model is able to properly fit the first part of the fluorescence decay of Tm-doped tellurite glasses for different dopant concentration values. We also compare the model with a full numerical model to investigate its limitations. We assess the model is a valid tool to fit fluorescence properties but for precisely predicting population inversion is limited to doping level up to about 1%. In fact, we show the reverse cross-relaxation process becomes significant in case of higher doping level.
Analytical modelling of Tm-doped tellurite glass including cross-relaxation process / Albalawi, A; Brilliant, C; Chiasera, A; Gebavi, H; Balda, R; Ferrari, M; Blanc, W; Albalawi, W; Hung, H; Quandt, A; Lukowiak, A; Taccheo, S. - In: OPTICAL MATERIALS. - ISSN 0925-3467. - 87:(2019), pp. 29-34. [10.1016/j.optmat.2018.06.037]
Analytical modelling of Tm-doped tellurite glass including cross-relaxation process
Chiasera A;
2019-01-01
Abstract
In this paper, we present a comprehensive analytical model of Tm able to take into account direct cross-relaxation process. We show that by using an appropriate set of parameters the model is able to properly fit the first part of the fluorescence decay of Tm-doped tellurite glasses for different dopant concentration values. We also compare the model with a full numerical model to investigate its limitations. We assess the model is a valid tool to fit fluorescence properties but for precisely predicting population inversion is limited to doping level up to about 1%. In fact, we show the reverse cross-relaxation process becomes significant in case of higher doping level.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
