Spectroscopic and photoluminescence properties of Dy3+-doped lead tungsten tellurite glasses for laser materials

Pressure Effects on the Optical Properties of LuVO₄:Eu³⁺ Nanoparticles

“…A decrease of τ with pressure was observed for the 4f-4f transition of Eu 3+ in lithium borate glass [46]. The same type of decreasing  with pressure was observed in several materials doped with other RE [47][48][49].…”

Absorption and emission spectral studies of Sm3+-doped lead tungstate tellurite glasses

“…The oscillator strengths of the absorption bands are determined using our previous work [24]. The experimental oscillator strengths of the absorption bands of LTTSm10 glass are relatively much higher than those reported for Sm 3+ ion in CdO-Al 2 O 3 [15], LBTAF [20], LiLTB [25] and N4BS [26] glasses as presented in Table 1. The reasonably small ı rms of ±0.30 × 10 −6 between the measured and calculated oscillator strengths indicates that the intensity parameters obtained in the present work are more reliable.…”

Excitability of high-energy ultraviolet radiation for Dy3+ in antimony phosphate glasses

“…J-O intensity parameters Ω t (t = 2, 4, 6) for Dy 3+ in ZASP glasses were calculated to be 5.74 ×10 −20 cm 2 , 1.47 × 10 −20 cm 2 and 1.12 × 10 −20 cm 2 , respectively, and the rootmean-square deviation between the experimental and calculated oscillator strengths was assessed to be 2.3 × 10 −7 , indicating that the fitting process is reliable. Ω 2 of Dy 3+ in ZASP glasses is close to 5.41 × 10 −20 cm 2 in lead fluorogermanate glasses [64], 5.19 × 10 −20 cm 2 in lead tungsten tellurite glasses [65] and 4.90 × 10 −20 cm 2 in lead borate glasses [66], demonstrating a higher asymmetrical and stronger covalent environment around Dy 3+ in the ZASP glass system. Using these intensity parameters, the spontaneous emission probability (A rad ) and branching ratio (β) were calculated to be 541 s −1 and 64.85 % for the 4 F 9/2 → 6 H 13/2 transition, respectively, while they are 101 s −1 and 12.11 % for the The β for 4 F 9/2 → 6 H 13/2 transition is 64.9 %, revealing that yellow emission is the dominant radiative component of Dy 3+ .…”

“…7. The radiative transitions belonging to the 4f 9 electronic configurations can be analyzed by the JuddOfelt (J-O) theory based on the absorption of Dy 3+ [61][62][63][64][65][66][67][68][69]. J-O intensity parameters Ω t (t = 2, 4, 6) for Dy 3+ in ZASP glasses were calculated to be 5.74 ×10 −20 cm 2 , 1.47 × 10 −20 cm 2 and 1.12 × 10 −20 cm 2 , respectively, and the rootmean-square deviation between the experimental and calculated oscillator strengths was assessed to be 2.3 × 10 −7 , indicating that the fitting process is reliable.…”