Zinc Selenide (ZnSe) CO2 Laser Lens | Infrared Materials

Crystals Materials

Zinc Selenide (ZnSe) for optical components for high-power CO2 lasers

Surface Quality: 10/5 Scratch/Dig MIL-O-1380A

Parallelism: < 10″

Perpendicularity: < 5'

Clear Aperture: > 90%

Surface Flatness: < λ/10 @ 632.8 nm

Coating: AR/HR/PR coating upon customer's request

Quality Warranty Period: One year

Key Words: Infrared Materials , Zinc Selenide (ZnSe) , CO2 Laser Focal Lens

Zinc selenide (ZnSe) is an optical inert material known for its high purity, strong environmental adaptability, and ease of processing. It exhibits minimal light transmission loss and excellent transparency. With low absorption and resistance to thermal shock, zinc selenide material has high transmittance in the wavelength range of 600 nm to 16 μm, making it the preferred material for high-power CO2 laser optical components.

Specifications
Physical and optical properties

Specifications of Zinc Selenide (ZnSe)

Material	Zinc Selenide (ZnSe)
Diameter	3mm ~ 300mm
Thickness	>0.1mm
Dimension Tolerance	+0/-0.02mm
Angle Tolerance	±15 arcsec
Surface Accuracy	λ/10 @ 633nm
Surface Quality S/D	10-5
Pyramid Tolerance	<5 arcmin
Bevel	<0.25mm X 45°
Coating	Available upon request

Physical and optical properties

Crystal Structure	Cubic
Density	5.27 g/cm³
Crystal Size	<100 μm
Impurities	None > 0.05 mm
Resistivity	> 10^12 ohm-cm
Dielectric Constant	Consult Technical Personnel
Absorption Coefficient @10.6μm	<0.0005 cm^-1
Thermal Optical Coefficient (dn/dT) @10.6μm	6.1 x 10^-5 ℃
Refractive Index Uniformity @0.6328μm	<3 x 10^-6
Thermal Conductivity @20°C	0.18 W/cm/℃
Specific Heat	0.356 J/g/℃
Linear Expansion Coefficient @20°C	7.57 x 10^-6/℃
Young's Modulus	67.2 GPa (9.75 x 10^-6 psi)
Fracture Modulus	55.1 MPa (8,000 psi)
Knoop Hardness	105-120 kg/mm²
Poisson's Ratio	0.28
Fracture Toughness	0.5 x 10^-6 N/m^3/2

Stock specification list

If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
CVD ZnSe Focus Lens/Convex Lens/Concave Lens/Meniscus Lens Specifications

Part No.	Diameter	Effective Focal Length	Edge Thickness	Coating
FCL-025-038-02-ZnSe	Dia 25.40 mm	38.10 mm	2.00 mm	AR@1064 nm + 650 nm
PCL-027-150-02-ZnSe	Dia 25.40 mm	127.0 mm	2.59 mm	AR@1064 nm

CVD ZnSe Partial Reflectors Specifications

Part No.	Diameter	Edge Thickness	Coating
PRL-025-060-ZnSe	Dia 25.40 mm	6.00 mm	AR@1064 nm/PR@1064 nm(R=65%)
PRL-027-080-ZnSe	Dia 25.40 mm	8.00 mm	AR@1064 nm/PR@1064 nm(R=65%)

CVD ZnSe Windows/Beam Combiner/Beam Expander

Part No.	Face size	Thickness	Coating
WIN-080-020-ZnSe	Dia 8.00 mm	2.00 mm	UnCoated
WIN-127-020-ZnSe	Dia 12.70 mm	2.00 mm	UnCoated
WIN-080-020-ZnSe	Dia 80.00 mm	3.00 mm	AR@1064 nm
BCL-080-020-ZnSe	Dia 20.00 mm	1.50 mm	AR@1064 nm + 650 nm

Notes

Anti-reflection coatings are available at your specified wavelength.

Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.

To inquiry or order a finished Zinc Selenide (ZnSe) windows, please specify the specification listed above, for common application, we only need to know the main specification: sizes, and coating. For special request, please specify specification in details for evaluation and fabrication.

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