Room temperature persistent spectra hole burning in Sm2+-doped silicate glasses prepared by the sol-gel process

Abstract

Persistent spectra hole burning is observed at room temperature in the excitation spectrum for the 7F0→5D0 transition of the Sm2+ ions that are doped in aluminosilicate glass. Glass having the composition of Sm2+-doped Al2O3⋅9SiO2 has been prepared by the sol-gel processing of metal alkoxides and the reaction with H2 gas at 800 °C. Sol-gel derived glass enables Sm to be doped in the Sm2+ state of which the 4f6 (7F0)→4f55d band does not overlap with the 5D0→7F0 line. The hole width and depth, which are burned by the DCM dye laser, are ∼15 cm−1 and ∼10% of the total intensity, respectively, at 20 °C.

Sol-Gel processing of Sm2+-doped glass and its spectral hole burning at room temperature

“…The PL spectra have the emission lines at around 560, 600, and 650 nm, which are attributed to the 4G5/2 --->-6H5/2,7/2,9/2 transitions, respectively, of the Sm 3+ ion [13]. These results indicate that all of the samarium ions are in the trivalent state in the glass network [11,12].…”

“…Very recently, we established a new approach for the preparation of Sm2+-doped alumino-silicate glasses using a sol-gel method and observed PSHB at room temperature [11,12]. Alumino-silicate glasses are appropriate for the incorporation of the Sm 2+ ion and show high chemical durability and high transparency in the visible wavelength range.…”

Influences of Al3+ and Eu3+ concentration on PSHB properties of melt-quenched Al2O3–SiO2 glasses

“…Eu 3+ embedded glasses are frequently cited as high temperature PSHB materials. For instance, Eu 3+ in Al 2 O 3 -SiO 2 [2] or Na 2 O-B 2 O 3 [3] glass is a novel example that exhibits the hole-burning even at room temperature, although its actual mechanism in these glass systems is not yet clarified. It is well known that the PSHB is hypersensitive to the composition of glass matrix.…”

The mechanism of photobleaching in Sm2+-doped alkaline-earth fluorohalides

“…Some materials doped with Sm 2+ , such as alkaline-earth fluorohalides with the PbFCl-type structure, borate glasses [3][4][5][6], fluoride [7][8] glasses, Al 2 O 3 -SiO 2 glass [9][10][11][12][13][14][15][16][17] and ZnS nanocrystals [18], etc for applications of the frequency domain optical storage. In the investigation of room temperature hole burning, much attention has been paid on getting a broad inhomogeneous emission band [3,[19][20][21].…”