Continuous-wave broadly tunable high-power Cr:CdS laser

We report spectroscopic characteristics and laser properties of the mid-infrared active laser medium Cr(2+):CdS. Temperature-dependent absorption, luminescence and lifetime measurements of the (5)E exited state allow determination of peak emission cross section value of 1.35 × 10(−18) cm(2) in σ-pol...

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Detalles Bibliográficos
Autores principales: Sorokin, E., Klimentov, D., Frolov, M. P., Korostelin, Yu. V., Kozlovsky, V. I., Podmar’kov, Yu. P., Skasyrsky, Ya. K., Sorokina, I. T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4372838/
https://www.ncbi.nlm.nih.gov/pubmed/25834306
http://dx.doi.org/10.1007/s00340-014-5921-z
Descripción
Sumario:We report spectroscopic characteristics and laser properties of the mid-infrared active laser medium Cr(2+):CdS. Temperature-dependent absorption, luminescence and lifetime measurements of the (5)E exited state allow determination of peak emission cross section value of 1.35 × 10(−18) cm(2) in σ-polarization at room temperature. Lifetime values vary from 7.6 µs at 8 K to 0.48 µs at 320 K, corresponding to 22 % quantum yield at 285 K. Under Tm-fiber laser pumping, the continuous-wave output reached 1.8 W at 2.5 μm with 35.5 % slope efficiency. With a single CaF(2) prism, the CW Cr(2+):CdS laser could be tuned from 2.240 to 3.285 µm.

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