Zinc Selenide

(

ZnSe

)
Eigenschaften 
Transmission Range % 50
Transmission Range

0.48 - 20.5 µm (thickness 2 mm) 

Refractive Index

2.5906 @ 633 nm

Reflection Loss 

17.05%@10 µm

Residual Beam Wavelength  

45.7 µm

Density  

5.27 g/cm3

Melting point  

>500°C (sublimation) 

Molecular Weight 

144.3

Thermal Conductivity  

18 W/(m·K) @298K

Spec. Heat Capacity  

339.13 J/(kg·K) @20°C

Thermal Expansion  

7.1 · 10-6 /K @273K

Hardness (Mohs) 

110 (Indenter load 50g)

Young's Modulus 

70.3 GPa

Shear Modulus 

28.9 GPa

Bulk Modulus  

63.1 GPa

Fracture Modulus 

55 MPa

Elastic Coefficient 

C11 = 86.4; C12 = 51.5; C44 = 40.2 GPa

Dielectric Constant

9.12 @298K

Solubility in Water 

unsoluble

Crystal Structure  

polycrystalline, synthetic  

Crystal Type  

cubic, sphalerite type structure, grain size 100 µm  

Cleavage Planes 

no cleavage

Poisson Ratio  

0.3

Application  

CO2-laser optics, cutting lenses, IR optics 

Remarks  

laser damage threshold: 0.59 GW/cm2 @2.7 µm; 0.64 GW/cm2 @10.6 µm; max. temperature for application:300°C, reacts in combination with acids and concentrated bases.

Remarkable 
  • Polycrystalline material produced by CVD process (Chemical Vapor Deposition)
  • Available in large plates and different thicknesses up to approx. 60mm  (price correlates with the thickness of the plate)
  • Compared to ZnS its absorption and refractive index homogeneity regarding 10,6µm is better and therefore more suitable for laser components – especially for 10.6 µm high power laser
  • It is slightly softer and more prone to scratches than ZnS
  • For prism applications the material should be specially oriented with regard to the direction of growth of the microcrystalline grains
NOTE: Despite careful research, we do not accept any liability for the correctness of the information provided. Liability claims based on the use of the information are excluded in principle.

Zinc Selenide: Korth Kristalle - Vom Rohkristall zur hochpräzisen Optik. Durchblick für alle Wellenlängen - Seit 72 Jahren züchten wir Kristalle und fertigen daraus hochpräzise optische Komponenten für alle Wellenlängen vom IR- bis zum VUV-Bereich. Unsere Produkte kommen in allen Bereichen zum Einsatz, in denen eine hochentwickelte, präzise technische Ausstattung unerlässlich ist – von der Analytik bis hin zur Medizin- und Raumfahrttechnik.

Contact/Inquiry

Korth Kristalle

Am Jägersberg 3
24161 Altenholz

+49 (0)431 - 36 90 50
+49 (0)431 - 36 90 525

info@korth.de


Contact

Remarkable

  • Polycrystalline material produced by CVD process (Chemical Vapor Deposition)
  • Available in large plates and different thicknesses up to approx. 60mm  (price correlates with the thickness of the plate)
  • Compared to ZnS its absorption and refractive index homogeneity regarding 10,6µm is better and therefore more suitable for laser components – especially for 10.6 µm high power laser
  • It is slightly softer and more prone to scratches than ZnS
  • For prism applications the material should be specially oriented with regard to the direction of growth of the microcrystalline grains