Er:LiYF4 planar waveguide laser at 2.8 μm
We report on a mid-infrared erbium planar waveguide laser operating on the 4I11/2 → 4I13/2 transition. It employs a heavily doped 10.6 at. % Er3+:LiYF4 single-crystalline layer grown by liquid-phase epitaxy. The waveguide laser delivers a maximum output power of 191 mW at ∼2809 nm with a slope effic...
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| Veröffentlicht in: | Applied physics letters 2024-08, Vol.125 (8) |
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| container_title | Applied physics letters |
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| creator | Bae, Ji Eun Loiko, Pavel Normani, Simone Brasse, Gurvan Benayad, Abdelmjid Braud, Alain Camy, Patrice |
| description | We report on a mid-infrared erbium planar waveguide laser operating on the 4I11/2 → 4I13/2 transition. It employs a heavily doped 10.6 at. % Er3+:LiYF4 single-crystalline layer grown by liquid-phase epitaxy. The waveguide laser delivers a maximum output power of 191 mW at ∼2809 nm with a slope efficiency of 15%, a linear polarization, and a laser threshold of 134 mW. The waveguide propagation losses are 0.4 ± 0.2 dB/cm. The polarized spectroscopic properties of the Er3+:LiYF4 layers are also investigated. The stimulated-emission cross section of Er3+ ions amounts to 0.87 × 10−20 cm2 at 2809 nm for π-polarization. Er3+:LiYF4 epitaxial layers represent a promising platform for integrated low-loss mid-infrared light sources. |
| doi_str_mv | 10.1063/5.0221163 |
| format | Article |
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| language | eng |
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| source | AIP Journals Complete |
| subjects | Epitaxial growth Epitaxial layers Erbium Infrared lasers Infrared radiation Light sources Linear polarization Liquid phase epitaxy Liquid phases Physics Planar waveguides Single crystals Waveguide lasers |
| title | Er:LiYF4 planar waveguide laser at 2.8 μm |
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