title: Continuous-wave broadly tunable high-power Cr:CdS laser.
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 the5E exited state allow determination of peak emission cross section value of 1.35 × 10-18cm2inσ-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.
authors.affiliation: Institut für Photonik, TU Wien, Gusshausstrasse 27/387, 1040 Vienna, Austria.
authors.forename: E
authors.initials: E
authors.lastname: Sorokin
authors.affiliation: Department of Physics, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
authors.forename: D
authors.initials: D
authors.lastname: Klimentov
authors.affiliation: P.N. Lebedev Physics Institute, Russian Academy of Sciences, Leninsky prosp. 53, 119991 Moscow, Russia ; Moscow Institute of Physics and Technology (State University), Institutskii per. 9, Dolgoprudnyi, 141700 Moscow Region, Russia.
authors.forename: M P
authors.initials: MP
authors.lastname: Frolov
authors.affiliation: P.N. Lebedev Physics Institute, Russian Academy of Sciences, Leninsky prosp. 53, 119991 Moscow, Russia.
authors.forename: Yu V
authors.initials: YV
authors.lastname: Korostelin
authors.affiliation: P.N. Lebedev Physics Institute, Russian Academy of Sciences, Leninsky prosp. 53, 119991 Moscow, Russia.
authors.forename: V I
authors.initials: VI
authors.lastname: Kozlovsky
authors.affiliation: P.N. Lebedev Physics Institute, Russian Academy of Sciences, Leninsky prosp. 53, 119991 Moscow, Russia ; Moscow Institute of Physics and Technology (State University), Institutskii per. 9, Dolgoprudnyi, 141700 Moscow Region, Russia.
authors.forename: Yu P
authors.initials: YP
authors.lastname: Podmar'kov
authors.affiliation: P.N. Lebedev Physics Institute, Russian Academy of Sciences, Leninsky prosp. 53, 119991 Moscow, Russia.
authors.forename: Ya K
authors.initials: YK
authors.lastname: Skasyrsky
authors.affiliation: Department of Physics, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
authors.forename: I T
authors.initials: IT
authors.lastname: Sorokina
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