Ultrabroadband mid-infrared emission from Cr²⁺:ZnSe-doped chalcogenide glasses prepared via hot uniaxial pressing and melt-quenching*

Abstract

We reported an ultrabroadband mid-infrared (MIR) emission in the range of 1800 nm–3100 nm at room temperature (RT) from a Cr2+:ZnSe-doped chalcogenide glasses (ChGs) and studied the emission-dependent properties on the doping methods. A series of Cr2+:ZnSe/As40S57Se3 (in unit wt.%) glass-ceramics were prepared by hot uniaxial pressing (HUP) and melt-quenching methods, respectively. The glass-ceramics with MIR emission bands greater than 1000 nm were successfully prepared by both methods. The effects of matrix glass composition and grain doping concentration on the optical properties of the samples were studied. The occurrence state, morphology of the grains, and the microscopic elemental distributions were characterized using x-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive spectrometer (EDS) analyses.

Experimental study of optical parametric oscillator cascaded Cr2+:ZnS laser

“…Cr 2+ -doped chalcogenide crystals have been praised as mid-infrared titanium gems by researchers. Its ultra-wide emission spectrum characteristics make it an ideal medium for mid-infrared broadband and ultra-fast solid-state lasers [9] .…”