Fe:ZnSe/Fe:ZnS
Fe²+:ZnSe saturable absorbers (SA) are ideal materials for passive Q-switches of solid-state lasers operating in the spectral range of 2.5-4.0 μm.These lasers (e.g. 3.0 μm Er:YAG/YSGG/YLF) are used for pumping middle-infrared Optical Parametric Oscillators and for numerous medical and dental applications. Fe:ZnSe or Iron(Ferrum) doped Zinc Selenide (Fe2+:ZnSe) is also one of the most effective crystals used to design lasers in middle (thermal) infrared. It is considered to be the most effective laser medium to obtain 3~5um mid-infrared lasers with high performance and wide tuning range because of long output wavelength, wide absorption band and emission band.Such high-performance mid-infrared lasers have important application value in the field of military confrontation,biological safety and environmental sciences. Chemical Formula: Fe2+:ZnSe Emission range: 3.4 µm – 5.2 µm Extensive gain bandwidth: > 500 nm Q-switch range: 2.8 µm – 3.4 µm Structure: cubic Upper level lifetime at 300K, us: 0.37 Peak coefficient absorption, cm-1: 1-20 Supplement from the selected PDF already included in the final JSON (shared Cr²⁺/Fe²⁺ diffusion-doped ZnSe description, ZnSe only): DIEN TECH offers Cr2+and Fe2+ diffusion doped ZnSe polycrystalline gain materials , saturable absorbers with low losses, uniform distribution of transition metal dopant. Cr2+and Fe2+ doped ZnSe lasers are promising for spectroscopy, sensing, medical and defense applications, as well as for seeding or pumping middle- infrared optical parametric oscillators.
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