Room-temperature persistent spectral hole burning in Sm^2+-doped fluoride glasses

Abstract

Persistent spectral hole burning is observed in Sm(2+)-doped glasses at room temperature. The holes are burned in the (7)F(0) ? (5)D(0), (5)D(1) lines of the Sm(2+) ions in three kinds of fluoride glass. The dependence of the burning efficiency on the sample and on the burning intensity is measured. The intensity dependence is approximately linear, and no antihole is observed around the burned hole. The hole-burning mechanism is discussed. The temperature dependence of the homogeneous width is also measured.

Influence of tungsten on the emission features of Nd3+, Sm3+ and Eu3+ ions in ZnF2–WO3–TeO2 glasses

“…The intensity ratio of electric dipole to magnetic dipole transitions is a measure of the asymmetry of the local environment of Sm 3+ ions. The greater the intensity ratio of the electric dipole transition to the magnetic dipole transition (I 4G5/2 → 6H9/2 /I 4G5/2 → 6H7/2 ) the more is the asymmetry of Sm 3+ in the network [23]. In the present work, this ratio is evidently more for the glass SmW 15 indicating the highest local disorder for the Sm 3+ ion in the network of this glass.…”

“…This ion exists in trivalent and divalent states but between these two states, Sm 3+ (4f 5 ) is found to be more stable. Samarium exhibits promising characteristics for spectral hole burning studies [22,23]. The decay of exited states in Sm 3+ involves different mechanisms depending on the matrix.…”

The Effect of Cerium Reduction on Light Emission in Cerium-containing 20Y2O3-25Al2O3-55SiO2 Glass

“…Several activators also tend to build multivalent ion states in the glass [8][9]. In particular, cerium has two types of ions, viz.…”

Persistent spectral hole burning and nonselective photoionisation of Sm 2+ in borate and borosilicate glasses

“…In borate and sol-gel aluminosilicate glasses the roomtemperature ratio of inhomogeneous and homogeneous widths is especially large [5]. Although there are several works describing the spectral hole burning (SHB) in borate, silicate and fluoride [6] glasses, it is not always clear which mechanism and which traps are responsible for the SHB under different burning conditions. The situation is complicated because the single-photon excitation of the Sm 2+ 7 F 0 -5 D 0 transition may cause SHB via tunnelling ionisation as well as via the "glass mechanism" -structural reorganisation of ionic groups near the Sm 2+ ion.…”