Spectroscopic investigations of Tm3+ doped CdF2 single crystals and infrared laser potentialities

Cheddadi, A.; Fartas, R.; Diaf, M.; Boubekri, H.

doi:10.1016/j.jlumin.2023.120237

Cited by 4 publications

(1 citation statement)

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“…The crystal structure was checked using an X-ray diffraction (XRD) pattern (Figure 1) and a powder diffractometer PANalytical Empyrean XRD in Bragg-Brentano geometry with a CuKα target radiation source. All of the peaks could be attributed to the cubic phase of fluorite-type structure with the confirmed Fm-3m space group according to the International Centre for Diffraction Data (ICDD) card (ICDD: 01-073-4333) and were related to the first previous works [15][16][17][18].…”

Section: Crystal Phase Characterizationmentioning

confidence: 64%

Luminescence properties of CdF₂ single crystals co‐doped with Er³⁺ and Y³⁺ ions

Boubekri,

Fartas,

Diaf

et al. 2024

Luminescence

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The luminescence properties of erbium and yttrium co‐doped cadmium difluoride with three different concentrations of yttrium were investigated. First, we synthesized single crystal samples with good optical quality using the Bridgman technique. From the optical absorption spectra, recorded at room temperature, both in the ultraviolet–visible and infrared spectral ranges, Judd–Ofelt analysis was performed based on yttrium concentrations to predict the radiative properties of Er3+ luminescent ions. For the 10% optimum concentration of yttrium, a detailed photoluminescence investigation was carried out. We mainly explored green, red, and near‐infrared fluorescence under different excitation wavelengths and presented their highlight spectroscopic characteristics. The desired transitions had relatively high emission cross‐sections both under visible and near‐infrared excitation. Optical gain followed a similar trend. Furthermore, the dynamic fluorescence study showed a significant increase in the measured lifetime under an 800 nm infrared excitation. The upconversion process under an 800 nm excitation produced quantum efficiency greater than 100% due to the contribution of more than one energy transfer mechanism.

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Section: Crystal Phase Characterizationmentioning

confidence: 64%