Abstract

The luminescences of zinc-blende MnTe epitaxial films are respectively excited by a laser and deuterium lamp to study ${\mathrm{Mn}}^{2+}d\text{-}d$ multiplets transitions. Besides the inclusion of the band gap, all other excited states related to ${\mathrm{Mn}}^{2+}d\text{-}d$ transitions including ${}^4{T}_1({}^{4}G)$, ${}^4{T}_2({}^{4}G)$, ${}^4{A}_1[{}^{4}E({}^{4}G)]$, ${}^4{T}_2({}^{4}D)$, ${}^{4}E({}^{4}D)$, and ${}^2{T}_2({}^{2}I)$ are observed. The shift and broadening of the ${}^4{T}_1({}^{4}G)$ and ${}^4{T}_2({}^{4}G)$ lines with increasing temperature are described by the electron–phonon coupling. Step-like energy and intensity shifts for the ${}^4{A}_1[{}^{4}E({}^{4}G)]$, ${}^4{T}_2({}^{4}D)$, ${}^{4}E({}^{4}D)$, and ${}^2{T}_2({}^{2}I)$ transitions occur in the vicinity of the Néel point, which can be ascribed to the different spin-ordering-induced energy relaxation in ground and excited states of ${\mathrm{Mn}}^{2+}d\text{-}d$ multiplets, and these transitions show temperature independence and weak quenching.

© 2018 Optical Society of America

Broadband multicolor upconversion from Yb³⁺–Mn²⁺ codoped fluorosilicate glasses and transparent glass ceramics

Xin Wang, Yushi Chu, Zhiyong Yang, Ke Tian, Wenhao Li, Shunbin Wang, Shijie Jia, Gerald Farrell, Gilberto Brambilla, and Pengfei Wang
Opt. Lett. 43(20) 5013-5016 (2018)

Laser-induced excited-state crossover and spectral variation of Cr³⁺ in the high-crystal-field environment of CaGa₂O₄

M. Rai, S. K. Singh, and P. Morthekai
Opt. Lett. 41(15) 3635-3638 (2016)

Temperature and excitation wavelength-dependent photoluminescence of CH₃NH₃PbBr₃ crystal

Qi Wang and Wenzhi Wu
Opt. Lett. 43(20) 4923-4926 (2018)

Mn⁴⁺/Eu³⁺ co-doped fluoride toward a blue light-excited optical fiber thermometer

KongLan Chen, Shiyu Jia, Chuang Zhang, Enhai Song, Zifan Shao, Yayun Zhou, Tingting Deng, and Ting Yu
Opt. Lett. 49(2) 238-241 (2024)

Broadband emission of double perovskite Cs₂Na_0.4Ag_0.6In_0.995Bi_0.005Cl₆:Mn²⁺ for single-phosphor white-light-emitting diodes

Manchen Hu, Jiajun Luo, Shunran Li, Jing Liu, Jinghui Li, Zhifang Tan, Guangda Niu, Zhenxing Wang, and Jiang Tang
Opt. Lett. 44(19) 4757-4760 (2019)