ZnSe Zinc Selenide

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

Rupture 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.

ZnSe – 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