Zinc Sulfide MultiSpectral (ZnS MS)

Zinc Sulfide MultiSpectral (ZnS MS)

ZnS MultiSpectral is II-VI Infrared’s zinc sulfide material treated by a hot isostatic press (HIP) process. Under intense heat and pressure, defects within the crystalline lattice are virtually eliminated, leaving a water-clear material with minimal scatter and high transmission characteristics from 0.4 to 12 microns. This material is particularly well suited for high-performance common aperture systems that must perform across a broad wavelength spectrum.

II-VI Infrared’s extensive capabilities, equipment, and experience enable us to offer ZnS MS material to exacting specifications of dimensional shape and tolerances. ZnS MS material is also available in random sizes and shapes for use as evaporative source material.

ZnS MS Transmission Graphs

Material Properties

Optical Properties
Bulk Absorption Coefficient @ 10.6µm	<= 0.20/cm
Temperature Change of Refractive Index @ 0.6328µm	54 x 10^-6/°C
Refractive Index Inhomogeneity @ 10.6µm	< 20 x 10^-6

Thermal Properties
Thermal Conductivity @ 20° C	0.27 W/cm/°C
Specific Heat	0.527 J/g/°C
Linear Expansion Coefficient @ 20° C	6.5 x10^-6/°C

Mechanical Properties
Young’s Modulus	85.5 GPa (12.4 x 10⁶ psi)
Rupture Modulus	68.9 MPa (10,000 psi)
Knoop Hardness	150-165 kg/mm²
Density	4.09 g/cm³
Poisson’s Ratio	0.27

Wavelength (µm)	Index	Wavelength (µm)	Index
0.4047	2.54515	1.1287	2.28485
0.4358	2.48918	1.5296	2.27191
0.4678	2.44915	2.0581	2.26442
0.4800	2.43691	3.000	2.25772
0.5086	2.41279	3.500	2.25498
0.5461	2.38838	4.000	2.25231
0.5876	2.36789	4.500	2.24955
0.6438	2.34731	5.000	2.24661
0.6678	2.34033	8.000	2.22334
0.7065	2.33073	9.000	2.21290
0.7800	2.31669	10.000	2.20084
0.7948	2.31438	11.250	2.18317
0.8521	2.30659	12.000	2.17101
0.8943	2.30183	13.000	2.15252
1.0140	2.29165