English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Er 3+  doped oxyfluoride tellurite glasses have been prepared. Three Judd-Ofelt parameters Ω t  (t = 2, 4, 6) and radiative properties are calculated for prepared glasses. Emission characteristics are analyzed and it is found that prepared glasses possess larger calculated predicted spontaneous transition probability (39.97 s −1 ), emission cross section σ em  (10.18 × 10 −21  cm 2 ) and σ em  × Δλ eff  (945.32 × 10 −28  cm 3 ), corresponding to the 2.7 μm emission of Er 3+ :  4 I 11/2 →  4 I 13/2  transition. The results suggest that the prepared glasses might be appropriate optical material for mid-infrared laser application. Moreover, rate equation analysis which is rarely used in bulk glass has been carried out to explain the relationship between emission intensity and Er 3+  concentration. The calculation results show that with the increment of Er 3+  concentration, the energy transfer up-conversion rate of  4 I 13/2  state increases while the rate of  4 I 11/2  state reduces, resulting in the change of 2.7 μm emission.

Investigation of mid-infrared emission characteristics and energy transfer dynamics in Er3+ doped oxyfluoride tellurite glass