Products
Home /CRYSTALS /

Window crystals

/CaF2 crystal Calcium Fluoride 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.

  • Product Origin:

    China
  • Shipping Port:

    Fuzhou, China
  • Lead Time:

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

Descriptions:

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.Calcium fluoride(CaF2) is a very important optical functional crystal, which has good optical properties, mechanical properties and chemical stability. It can be used as optical crystal, laser crystal and inorganic scintillation crystal. It has a wide transmittance range (0.125-10 μm), and is widely used as optical medium from vacuum ultraviolet to mid infrared. CaF2 crystal is an ideal optical material for achromatic lenses because of its special refractive index and relative dispersion. At present, deep UV excimer laser lithography is developing from 193 nm to 121 nm. CaF2 single crystal has the advantages of good ultraviolet transmittance, high laser damage resistance threshold, low stress birefringence and high refractive index, which makes it the best choice for the research of deep UV excimer laser lithography. In terms of laser applications, laser diode pumped CaF2 crystals activated by Er3+, Tm3+, Yb3+ and other 3-valent rare earth ions were obtained at room temperature.


Main application:

1) VUV , UV ,IR optical systems

2) CaF2 crystals used for stable femtosecond white light generation from UV to IR.


Basic properties of CaF2 crystal:

Chemical Formula

CaF2

Maximum Size

φ180mm

Transmission range (um)

0.15-9.0

Density (g/cm3)

3.18

Melting Point ()

1418

Mohs Scale of Mineral Hardness

4

Thermal Expansion Coefficient (10-6/K)

16.2-19.4

Thermal Conductivity

9.17

Dissolubility (g/cm3)

0.0016

Wavelength (um)

0.2

Refractive Index

1.4951

Wavelength (um)

0.2; 0.5; 1.0; 5.0; 10.0; 12.0

Refractive Index

1.4951; 1.4365; 1.4289; 1.3990; 1.3002; 1.2299

Absorption Coefficient (cm-1)

0.10@0.2um; 0.01@0.4um;0.03@2.7um


HGO offers CaF2 specifications:

Orientation:

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 CaF2 or Calcium Fluoride Crystal in mass production quantity. Material from HGO features with high transmittance in UV and IR wavelength ranges. HGO offer supplies [001] cut (i.e. the surface is perpendicular to the [001] axis) high quality CaF2 windows for continuum generation. CaF2 windows cut along a random orientation and polycrystalline CaF2 windows are also available. In addition, we can also produce other types of window crystals like YAG crystals, BaF2, MgF2,LiF Crystals, etc.

HGO has a mass-production line for CaF2 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
MgF2 crystal window
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.

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
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
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
IAD EB  IBS Coating service
Crystals and Optics coating service

HGO have advanced coating machines which can meet endusers’different application requirement. We can very high laser induced damaged threshold coating with IAD, EB and IBS coating techniques , also Cr-Au, Aluminum and silver mental coating can also be available in HGO. Customers are very welcome to contact with us for further information.

Read More
LiNbO3 LN nonlinear crystal
LiNbO3 crystal Lithium niobate

LiNbO3 is widely used as electro-optic modulators and Q-switches for Nd:YAG, Nd:YLF and Ti:Sapphire lasers as well as modulators for fiber optics.

Read More
Nd:YLF Laser Crystal
Nd:YLF Crystal Neodymium-doped yttrium lithium fluoride

HGO grows Nd:YLF laser crystals using Czochralski technology. Nd3+:YLF crystal is characterized by its long lifetime of 4F3/2 neodymium energy level. Compared to Nd:YAG, the lower thermal conductivity and a weak negative dn/dT lead to lower thermal distortions and allow to achieve a better output beam quality. Another distinctive feature is the high UV transparency, which is favorable for pumping with xenon flash lamps.

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