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DESCRIPTION

Basic Info

Model NO.	Dia1-20*0.1-220
Specification	customized
Trademark	optu
Origin	Chengdu
HS Code	9001909090
Production Capacity	5000 Pieces / Year

Product Description

Descriptions:
MgF2 or Magnesium Fluoride is positive uni-axial crystal with a very high optical transmittance from the vacuum UV to IR. It is regularly used for optical elements where extreme ruggedness and durability is required.

 

Main application:
1) VUV , UV ,IR optical systems
2) UV photomultiplier tubes
3) Excimer lasers
4) Optical fiber communications industry

 

Advantages:
1) High optical transmittance from the vacuum ultraviolet to the infrared spectrum region(0.12~8.5μm).
2) Resistance to mechanical , thermal shock and radiation
3) Chemically stable
4) A positive birefringent crystal
5) Used for Optical prisms, lenses, wedges, windows, other optical components etc

 

Basic properties of MgF2 crystal:

Chemical Formula	MgF2
Density	3.18 g/cm3
Melting Point	1255ºC
Boiling Point	2239ºC
Molar Mass	62.32
Thermal Conductivity	3.15W/m K
Specific Heat	920 J/(kg K)
Thermal Expansion Coefficient	⊥C 9×10-6∥C 14 ×10-6 / K
Knoop Hardness	415,576 kg/mm2
Mohs Hardness	5--6
Young's Modulus	138.5 GPa
Shear Modulus	54.66 GPa
Bulk Modulus	101.32 GPa
Rupture Modulus	49.6 MPa
Elastic Coefficient	C11=140 C12=89 C44=57 C13=63 C66=96
Dielectric Constant	105 ~107 Hz 5.45
Solubility in Water	0.0076 g / 100 g, 18ºC
Lattice Parameter	a=4.64 Å, c=3.06 Å
Crystal Type	Tetragonal, P42/mnm
Cleavage Planes	(100), (110)
Absorption Coefficient	0.07 at 0.2µm,0.02 at 5.0µm
Poisson's Ratio	0.276
Transmission Range	0.11 - 8.5
Vapor Pressure	1 Pa(at 1150ºC), 10 Pa(at 1300ºC)
Applications	IR, UV , DUV and VUV
Fluorescence	Weak yellow upon excitation at 590 nm

OPTU offers MgF2 specifications:

Orientation:	a-cut or <100> ;C-cut or<001>; random (-RM) or as specified
Wavefront Distortion:	λ/6 per inch @ 632.8 nm
Dimension Tolerances:	rods with diameter: +0.0/-0.05 mm , Length: ±0.1 mm
Surface Quality:	20/10 Scratch/Dig MIL-O-1380A
Parallelism:	< 20″
Perpendicularity:	< 10′
Clear Aperture:	> 85%
Surface Flatness:	< λ/6 @ 632.8 nm
Chamfer:	< 0.25 mm @ 45deg.
Size	Upon customer request
Coating	Uncoated or upon customer's request
Quality Warranty Period	One year under proper use