Products
Home /CRYSTALS /

Window crystals

/MgF2 crystal Magnesium Fluoride

MgF2 crystal Magnesium Fluoride

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. It also has a large resistance to mechanical and thermal shock, to optical radiation, and is chemically stable, making it a very useful materials for UV and IR optics.

  • Product Origin:

    China
  • Shipping Port:

    Fuzhou, China
  • Lead Time:

    3-4weeks
Share To : f t y b l ins
  • Product Detail

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

1255

Boiling Point

2239

Molar Mass

62.32

Thermal Conductivity

3.15W/m K

Specific Heat

920 J/(kg K)

Thermal Expansion Coefficient

C 9×10–6C 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, 18

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 1150), 10 Pa(at 1300)

Applications

IR, UV , DUV and VUV

Fluorescence

Weak yellow upon excitation at 590 nm

HGO 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


Why Choose HGO ?

HG OPTRONICS.,INC. has the ability to supply high quality MgF2 Magnesium Fluoride Crystal in mass production quantity. Material from HGO features with high transmittance in VUV(>70%) and UV wavelength ranges. Standard size for VUV windows are Dia.8 and Dia.6 with 1mm thickness.

HGO offer both a-cut (or [100] cut) MgF2 windows for the maximum birefringence and c-cut (or cut along the optical axis) with the minimum birefringence. Random-cut (cut along a random axis) MgF2 windows are also available. The thickness can be made as thin as 0.1mm. In addition, we can also produce other types of window crystals like YAG crystals, BaF2,LiF Crystals, etc.

HGO has a mass-production line for MgF2 crystals and have wide experiences and strong ability to supply such crystals with large quantity and in very short delivery time.


Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Related Products
CaF2 crystal windows
CaF2 crystal Calcium Fluoride windows

CaF2 or Calcium Fluoride is a cubic crystal with an excellent transmission from 130 nm to 10 μm and has widespread applications as transparent windows in the ultraviolet and infrared spectra.

Read More
LiF crystal  windows
LiF crystal lithium fluoride

HGO grows LiF crystals in house using Czochralski technology. LiF crystal or lithium fluoride crystal is an optical material with outstanding transmittance in VUV region. It is also used for windows, prisms, and lenses in the visible and infrared in 0.104µm-7µm. LiF single crystal is sensitive to thermal shock and would be attacked by atmospheric moisture at 400°C. When working at a high temperature of 600°C, the LiF crystal softens and is slightly plastic, so it can be bent into radius plates. In addition irradiation produces color centers. Hence, users should take measures to protect LiF crystals from moisture and high energy radiation damages. What is more LiF can be cleaved along (100) plane and less commonly (110) plane. The optical characteristics are good and yet the structure is not perfect and cleavage is difficult.

Read More
Pure YAG window crystal
YAG window crystals Yttrium Aluminum Garnet

Pure YAG Yttrium Aluminum Garnet is a new substrate and window material that can be used for both UV and IR optics. It is particularly useful for high-temperature and high-energy applications. The mechanical and chemical stability of YAG is comparable to sapphire crystal, but YAG is unique with no birefringence which is extremely important for some optical applications.

Read More
YbYAG Crystals for DPSS lasers
Yb:YAG crystals Ytterbium Doped Yttrium Aluminum Garnet

YbYAG crystal is more suitable for diode-pumping than the traditional Nd-doped systems. It can be pumped at 0.94 μm laser output. Compared with the commonly used Nd:YAG crystal, Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-state lifetime, three to four times lower thermal loading per unit pump power. Yb:YAG crystal is expected to replace Nd:YAG crystal for high power diode-pumped lasers and other potential applications.

Read More
Nd:GdVO4 laser host crystals
Nd:GdVO4 Crystal Neodymium Doped Gadolinium Orthovanadate

Nd:GdVO4, is a promising material for diode pumped lasers. Similar to the more well-known Nd:YVO4 crystal, Nd:GdVO4 crystal also exhibits high gain, low threshold, and high absorption coefficients at pumping wavelengths. Nd:GdVO4 has the additional advantage over Nd:YVO4 of a much higher thermal conductivity. For CW lasing at 1.06 um and 1.34 um and intracavity doubling with KTP and LBO, the gadolinium vanadate have produced a higher slope efficiency or optical conversion than Nd:YVO4.

Read More
TmYLF laser crystal
Tm:YLF crystal Thulium-doped Yttrium Lithium Fluoride

HGO grows Tm:YLF laser crystals using Czochralski technology. Tm:YLF is an important middle infrared laser crystal. Because Tm:YLF is negative uniaxial crystal, whose thermal refractive index coefficient is negative, some thermal distortion may be counteracted and high-quality light can be output. Conveniently pumped at 792nm, 1.9μm linearly polarized beam is output in a axis, and non-linearly polarized beam is output in c axis. The YLF crystals has low non-linear refraction index value and thermo optical constants, which makes these crystals applicable in research, development, education, production, photonics, optic, laser technology and telecommunications. Besides, Tm3+:YLF lasers are ideal pump sources for 2.1 μm Ho3+:YAG lasers. This is due to a good overlap of Tm3+:YLF emission and Ho3+:YAG absorption spectra and the capacity of producing linearly polarized output. What is more, the refractive index of Tm3+:YLF decreases with temperature, leading to a negative thermal lens that is partly compensated by a positive lens effect due to end face bulging.

Read More
KDP & DKDP/KD*P Crystal
KDP & DKDP Crystal Potassium Dihydrogen Phosphate and Potassium Dideuterium Phosphate

KDP Potassium Dihydrogen Phosphate and KD*P or DKDP Potassium Dideuterium Phosphate are among the most widely-used commercial NLO materials, characterized by good UV transmission, high damage threshold, and high birefringence, though their NLO coefficients are relatively low. They are usually used for doubling, tripling and quadrupling of a Nd:YAG laser under the room temperature. In addition, they are also excellent electro-optic crystals with high electro-optic coefficients, widely used as electro-optical modulators, such as Q-switches, Pockels Cells, etc.

Read More
KTP  crystal
KTP Nonlinear crystal Potassium Titanyl Phosphate

Potassium Titanyl Phosphate (KTiOPO4 or KTP) is widely used in both commercial and military lasers including laboratory and medical systems, range-finders, lidar, optical communication and industrial systems.

Read More
Leave A Message
Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Home

Products

about

contact