Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup>
This paper deals with broadband near-infrared luminescence properties of lead germanate glass triply doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup>. Samples were excited at 800 nm and 975 nm. Their emission intensities and lifetimes depend significantl...
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| Online Access: | https://www.mdpi.com/1996-1944/14/11/2901 |
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| author | Wojciech A. Pisarski Joanna Pisarska Radosław Lisiecki Witold Ryba-Romanowski |
| author_facet | Wojciech A. Pisarski Joanna Pisarska Radosław Lisiecki Witold Ryba-Romanowski |
| author_sort | Wojciech A. Pisarski |
| collection | DOAJ |
| description | This paper deals with broadband near-infrared luminescence properties of lead germanate glass triply doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup>. Samples were excited at 800 nm and 975 nm. Their emission intensities and lifetimes depend significantly on Er<sup>3+</sup> and Tm<sup>3+</sup> concentrations. For samples excited at 800 nm, broadband emissions corresponding to the overlapped <sup>3</sup>H<sub>4</sub> → <sup>3</sup>F<sub>4</sub> (Tm<sup>3+</sup>) and <sup>4</sup>I<sub>13/2</sub> → <sup>4</sup>I<sub>15/2</sub> (Er<sup>3+</sup>) transitions centered at 1.45 µm and 1.5 µm was identified. Measurements of decay curves confirm reduction of <sup>3</sup>H<sub>4</sub> (Tm<sup>3+</sup>), <sup>2</sup>F<sub>5/2</sub> (Yb<sup>3+</sup>) and <sup>4</sup>I<sub>13/2</sub> (Er<sup>3+</sup>) luminescence lifetimes and the presence of energy-transfer processes. The maximal spectral bandwidth equal to 269 nm for the <sup>3</sup>F<sub>4</sub> → <sup>3</sup>H<sub>6</sub> transition of Tm<sup>3+</sup> suggests that our glass co-doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup> is a good candidate for broadband near-infrared emission. The energy transfer from <sup>4</sup>I<sub>13/2</sub> (Er<sup>3+</sup>) to <sup>3</sup>F<sub>4</sub> (Tm<sup>3+</sup>) and cross-relaxation processes are responsible for the enhancement of broadband luminescence near 1.8 µm attributed to the <sup>3</sup>F<sub>4</sub> → <sup>3</sup>H<sub>6</sub> transition of thulium ions in lead germanate glass under excitation of Yb<sup>3+</sup> ions at 975 nm. |
| first_indexed | 2024-03-10T10:56:46Z |
| format | Article |
| id | doaj.art-a04ca7367fcf468c9c863bf4e7f41729 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T10:56:46Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
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| spelling | doaj.art-a04ca7367fcf468c9c863bf4e7f417292023-11-21T21:49:23ZengMDPI AGMaterials1996-19442021-05-011411290110.3390/ma14112901Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup>Wojciech A. Pisarski0Joanna Pisarska1Radosław Lisiecki2Witold Ryba-Romanowski3Institute of Chemistry, University of Silesia, Szkolna 9 Street, 40-007 Katowice, PolandInstitute of Chemistry, University of Silesia, Szkolna 9 Street, 40-007 Katowice, PolandInstitute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2 Street, 50-422 Wrocław, PolandInstitute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2 Street, 50-422 Wrocław, PolandThis paper deals with broadband near-infrared luminescence properties of lead germanate glass triply doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup>. Samples were excited at 800 nm and 975 nm. Their emission intensities and lifetimes depend significantly on Er<sup>3+</sup> and Tm<sup>3+</sup> concentrations. For samples excited at 800 nm, broadband emissions corresponding to the overlapped <sup>3</sup>H<sub>4</sub> → <sup>3</sup>F<sub>4</sub> (Tm<sup>3+</sup>) and <sup>4</sup>I<sub>13/2</sub> → <sup>4</sup>I<sub>15/2</sub> (Er<sup>3+</sup>) transitions centered at 1.45 µm and 1.5 µm was identified. Measurements of decay curves confirm reduction of <sup>3</sup>H<sub>4</sub> (Tm<sup>3+</sup>), <sup>2</sup>F<sub>5/2</sub> (Yb<sup>3+</sup>) and <sup>4</sup>I<sub>13/2</sub> (Er<sup>3+</sup>) luminescence lifetimes and the presence of energy-transfer processes. The maximal spectral bandwidth equal to 269 nm for the <sup>3</sup>F<sub>4</sub> → <sup>3</sup>H<sub>6</sub> transition of Tm<sup>3+</sup> suggests that our glass co-doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup> is a good candidate for broadband near-infrared emission. The energy transfer from <sup>4</sup>I<sub>13/2</sub> (Er<sup>3+</sup>) to <sup>3</sup>F<sub>4</sub> (Tm<sup>3+</sup>) and cross-relaxation processes are responsible for the enhancement of broadband luminescence near 1.8 µm attributed to the <sup>3</sup>F<sub>4</sub> → <sup>3</sup>H<sub>6</sub> transition of thulium ions in lead germanate glass under excitation of Yb<sup>3+</sup> ions at 975 nm.https://www.mdpi.com/1996-1944/14/11/2901lead germanate glassesrare earth ionsnear-infrared luminescence |
| spellingShingle | Wojciech A. Pisarski Joanna Pisarska Radosław Lisiecki Witold Ryba-Romanowski Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup> Materials lead germanate glasses rare earth ions near-infrared luminescence |
| title | Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup> |
| title_full | Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup> |
| title_fullStr | Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup> |
| title_full_unstemmed | Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup> |
| title_short | Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb<sup>3+</sup>/Er<sup>3+</sup>/Tm<sup>3+</sup> |
| title_sort | broadband near infrared luminescence in lead germanate glass triply doped with yb sup 3 sup er sup 3 sup tm sup 3 sup |
| topic | lead germanate glasses rare earth ions near-infrared luminescence |
| url | https://www.mdpi.com/1996-1944/14/11/2901 |
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