Cr2+:ZnS
Cr²+:ZnS is a laser gain medium formed by doping divalent chromium ions (Cr²⁺) into zinc sulfide (ZnS) crystals. Its core advantages reside in ultra-broadband tunable laser emission in the 2–3μm and exceptional passive Q‑switching performance, establishing it as one of the key materials for contemporary mid-infrared solid-state laser technologies. Comparison Between Cr²⁺:ZnS and Cr²⁺:ZnSe: Parameters | Cr²⁺:ZnS | Cr²⁺:ZnSe Wavelength | 2000-3000nm(center:2300nm) | 2100-2800nm (center:2500nm) Thermal conductivity | 16 W/(m·K) | 12 W/(m·K) Mohs hardness | 3.5-4 | 3 With three core advantages—ultra-broadband tunable mid-infrared emission, excellent thermal mechanical properties, and no excited-state absorption—Cr²⁺:ZnS has become one of the preferred materials for mid-infrared laser technology, with wide applications in military, scientific research, medical and other fields.
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