Magnesium Fluoride

(

MgF2

)
Eigenschaften 
Transmission Range

0.118 - 8.5 µm (thickness 2mm) 

Refractive Index

no = 1.375, ne = 1.389 @633nm

Reflection Loss 

2.52%@0.633 µm

Residual Beam Wavelength  

20.0 µm

Density  

3.177 g/cm3

Melting point  

1255°C

Molecular Weight 

62.32

Thermal Conductivity  

|| C: 21 W/(m·K) @300K,  ⊥ C: 33.6 W/(m·K) @300K

Spec. Heat Capacity  

1004 J/(kg·K)

Thermal Expansion  

|| C: 8.9 · 10-6/K; ⊥ C: 13.7 · 10-6 /K @293K 

Hardness (Mohs) 

415 (Mohs)

Young's Modulus 

138.55 GPa

Shear Modulus 

54.66 GPa

Bulk Modulus  

101.32 GPa

Fracture Modulus 

60 MPa

Elastic Coefficient 

C11 = 138; C12 = 88; C13 = 62; C33 = 201; C44 = 56.5; C66 = 95.6 GPa

Dielectric Constant

|| C: 4.87;  ⊥ C: 5.45 @95 Khz - 42 MHz

Solubility in Water 

< 0.0002g / 100g @ 0°...60°C

Crystal Structure  

single crystal, synthetic

Crystal Type  

tetragonal, rutile type structure, a= 4.623 Å; c= 3.053 Å

Cleavage Planes 

(110) (bad)

Poisson Ratio  

0.276

Application  

VUV optics (space technology), polarizing optics, windows and prisms for excimer lasers 

Remarks  

max. temperature for application: 500°C

Remarkable 
  • Has an excellent ultraviolett transmission (up to 118 nm)
  • Small refractive index
  • Used for excimer laser applications
  • Slightly birefringent, application as a polarizer
  • A diameter of 200 mm is the maximum size of our optics
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.

Magnesium Fluoride: 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

  • Has an excellent ultraviolett transmission (up to 118 nm)
  • Small refractive index
  • Used for excimer laser applications
  • Slightly birefringent, application as a polarizer
  • A diameter of 200 mm is the maximum size of our optics