Sensitization of Er3+ NIR emission using Yb3+ ions in alkaline-earth chloro borate glasses for fiber laser and optical fiber amplifier applications

Impact of crystal structure on optical properties and temperature sensing behavior of NaYF4:Yb3+/Er3+ nanoparticles

“…The 976 nm wavelength photons absorbed by the Er 3+ ions in its ground state result in the resonant excitation of the 4 I 11/2 level, moreover it is resonant with 2 F 7/2 → 2 F 5/2 transition of Yb 3+ which has high absorption cross section than Er 3+ ions and works as a sensitizer to Er 3+ ions. 37 The α-NaYF 4 :Yb 3+ /Er 3+ shows emission bands at 523, 548, and 660 nm corresponding to the 2 H 11/2 → 4 I 15/2 , 4 S 3/2 → 4 I 15/2 and 4 F 9/2 → 4 I 15/2 transitions of Er 3+ ion, respectively. The β-NaYF 4 :Yb 3+ /Er 3+ along with these emission bands show an additional emission band at 407 nm corresponding to the 2 H 9/2 → 4 I 15/2 transition of Er 3+ ions.…”

Er-Doped Mg4Ta2O9 Single-Crystal Scintillators Emitting Near-Infrared Photons for High-Dose Field Monitoring

“…However, the emission peaks were hardly observed owing to the weak emission intensity. In the 700-1625 nm range, sharp emission peaks were observed at 980 nm and 1550 nm, which were attributed to the 4f−4f transitions of Er 3+ [43,47]. The broad peak at 1200 nm in the 0.01% sample is noise.…”

Synthesis and Optical Properties of Erbium-Doped Sodium Silicate in Sol-Gel Matrix

“…The uniqueness of Er-doped sodium silicate thin films prepared using sol-gel at 200 °C lies in the unique combination of several key features. Firstly, the low preparation temperature of 200 °C represents an energyefficient and cost-effective process, making it suitable for various applications, especially optical communication and sensing technologies [31,32]. Moreover, the introduction of Erbium (Er) as a dopant brings forth auspicious optical attributes, potentially augmenting the performance of the film in optoelectronic devices [10,32,33].…”

“…Firstly, the low preparation temperature of 200 °C represents an energyefficient and cost-effective process, making it suitable for various applications, especially optical communication and sensing technologies [31,32]. Moreover, the introduction of Erbium (Er) as a dopant brings forth auspicious optical attributes, potentially augmenting the performance of the film in optoelectronic devices [10,32,33]. Sol-gel erbiumdoped sodium silicate is a composite material synthesized through the sol-gel process, where erbium ions are incorporated into a sodium silicate matrix.…”