Product Details

15mm circular Polished Industrial CVD Znse window

ZnSe is used as a material for production of optical elements (windows, lenses, prisms) for IR range including the passive laser optics elements. CVD - ZnSe is extremely uniform in structure; it has superior optical transmission with extremely low bulk losses from scatter and absorption.

CVD - ZnSe is the first choice for high power laser windows and multispectral application with useful transmitting range of 0.5 - 19 mm. It offers excellent imaging characteristics, high resistance to thermal shock, and is stable in virtually all operating environments. This material is soft and non-hygroscopic.

Physical properties of ZnSe

Density @ 300 K, g/cm³			5.27
Melting point, K			1798
Thermal conductivity @ 298 K, J/(K x m x c)			18.0
Thermal expansion, 1/K		@ 273 K	7.1 x 10^-6
		@ 373 K	7.8 x 10^-6
		@ 473 K	8.3 x 10^-6
Heat capacity @ 298 K, J/(g x K)			0.339
Hardness	Knoop, with 50 g indenter, kg/mm²		120
	Vickers, with 1 kg indenter, kg/mm²		112
Youngs modulus (E), Gpa			67.2
Bulk modulus (K), Gpa			40
Apparent elastic limit, Mpa			55.1
Fracture toughness MN m^-1.5, Vickers, 100 g			0.5
Poisson's ratio			0.28
Solubility			Insoluble in water
Resistivity, Ohm x cm			10¹²

Material	Zinc Selenide
Focal length tolerance	+/-1%
Dia Tolerance	+0.0/-0.1mm
thickness tolerance	+/-0.2mm
wavelength	10.6um
Surface accuracy	lambda/2 at 632.8nm
surface quality	60-40
parallelism	<3'
clear aperture	>80%