Abstract
We report spectroscopic characteristics and laser properties of the mid-infrared active laser medium Cr2+:CdS. Temperature-dependent absorption, luminescence and lifetime measurements of the 5E exited state allow determination of peak emission cross section value of 1.35 × 10−18 cm2in 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 CaF2prism, the CW Cr2+:CdS laser could be tuned from 2.240 to 3.285 µm.
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CITATION STYLE
Sorokin, E., Klimentov, D., Frolov, M. P., Korostelin, Y. V., Kozlovsky, V. I., Podmar’kov, Y. P., … Sorokina, I. T. (2014). Continuous-wave broadly tunable high-power Cr:CdS laser. Applied Physics B: Lasers and Optics, 117(4), 1009–1014. https://doi.org/10.1007/s00340-014-5921-z
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