CVD Laser Zinc Selenide

CVD laser grade zinc selenide is a yellow transparent polycrystalline material with a crystalline particle size of approximately 70 μ m and a transmittance range of 0.5-15 μ m. The synthesized material by chemical vapor deposition (CVD) method has almost no impurity absorption and extremely low scattering loss. It has the characteristics of wide light transmission range, high resistance to thermal shock, low hardness, and easy processing. Commonly used to manufacture optical components such as window materials, focusing lenses, beam splitters, prisms, and CO2 lasers. It can process shapes such as circular, rectangular, perforated, crescent, wedge-shaped, flat convex, flat concave, double convex, double concave, open ball, and prismatic.

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	Dia(mm)	ThK(mm)	Growth Mode	Orientation	Shape
	Screen Reset 3-300	Screen Reset 0.5-60	Screen Reset CVD	Screen Reset None	Screen Reset Customizable
More+ Less	3-300	0.5-60	CVD	None	Customizable
CVD Laser Grade Zinc Selenide，3-300mm Number：ZnSeA001 Dia(mm)：3-300 ThK(mm)：0.5-60 Growth Mode：CVD Orientation：None Shape：Customizable Diameter Tolerance(mm)：+0.0/-0.1 Thk Tolerance(mm)：±0.1 Material：Zinc Selenide（ZnSe） Transmission Range：0.5-22μm Density(g/cm³)：5.27 REACH：Compliant ROHS：Compliant

Material Data
Physical Properties
Crystal Structure	Cubic
Density [g/cm3]	5.27
Resistivity [Ω.cm]	～1012
Melting Point [℃]	1525
Chemical Purity [%]	99.9996
Thermal Expansion [1/K]	7.110-6@273k 7.810-6@373k 8.3*10-8@473k
Thermal Conductivity [J/k.m.s]	18.0@298k
Specific Heat Capacity [J/g.K]	0.339@298k
Knoop Hardness [kg/mm2]	110
Bending Strength [Mpa]	55
Young's Modulus [GPa]	67.2
Poisson's Coefficient	0.28
Optical Properties
Transmission Range	0.5-22μm
Refractive index inhomogeneity [△n/n]	<3*10-6@632.8μm
Absorption coefficient [1/cm]	5.010-3@1300nm 7.010-4@2700nm 4.010-4@3800nm 4.010-4@5250nm 5.0*10-4@10600nm
Thermal light coefficient [1/k,298-358k]	1.0710-4@632.80nm 7.010-5@1150nm 6.210-5@3390nm 6.110-5@10600μm

Wavelength(nm)	Refractive Index(n)	Wavelength(nm)	Refractive Index(n)
620	2.5994	10600	2.4028
1000	2.4892	13000	2.385
3800	2.4339	14600	2.3705
5000	2.4295	16600	2.3487
7000	2.4218	17800	2.3333
9000	2.4122	18200	2.3278