| Autor: |
Adam Říha, N. O. Kovalenko, Michal Jelínek, Jan Šulc, Maxim E. Doroshenko, Helena Jelínková, Miroslav Cech, David Vyhlídal |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Solid State Lasers XXX: Technology and Devices. |
| DOI: |
10.1117/12.2575879 |
| Popis: |
Two novel cryogenically cooled non-cubic wurtzite structure Cr2+,Fe2+:Zn1-xMgxSe (x ≈ 0.2 and x ≈ 0.3) single crystals co-doped with Cr2+ and Fe2+ ions with thickness of 2.5 and 5 mm, respectively, were investigated under two excitation wavelengths of the Q-switched Er3+:YLF (λ ≈ 1.73 μm) and Er3+:YAG (λ ≈ 2.94 μm) lasers. Absorption and fluorescence spectra, fluorescence lifetimes as well as laser output characteristics for both Cr2+ and Fe2+ doping ions were measured at 78 K. Both Cr2+,Fe2+:Zn1-xMgxSe laser systems were able to generate radiation from Cr2+ as well as Fe2+ active ions depending on appropriate pumping wavelength and a set of laser cavity mirrors. Moreover, Fe2+ ions mid-IR lasing using the Cr2+ → Fe2+ ions energy transfer at ~4.57 μm and ~4.8 μm for magnesium content of x ≈ 0.2 and x ≈ 0.3, respectively were realized for ~1.73 μm Q-switched Er3+:YLF laser pumping. The results present an opportunity to develop novel mid-IR 4.4 – 4.9 μm coherent laser sources based on non-cubic AIIBVI matrices using direct Fe2+ ions pumping at ~2.94 μm as well as excitation via co-doped Cr2+ ions at ~1.73 μm. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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