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.

Applications:

As a gain material in compact laser systems;
As passive Q-switch for 2800 – 3400 nm nm lasers;
Source for pumping middle infrared (MIR) optical parametric oscillators (OPO);
Spectroscopy;
Infrared (IR) missile countermeasure systems (ship and aircraft based);
Free space communications;
Gas tracing and analysis;
Chemical warfare detection;
Non-invasive medical diagnostics;
Medical surgeries;
Cavity ring down (CRD) spectroscopy