CaF2 Optical Material/Optical Calcium Fluoride/Optical Grade CaF2

Product Description

General Introduction:
Calcium fluoride single crystals, grown from high purity raw materials, are required for illumination and projection optics in 248nm and 193nm micro-thography technologies. Hellma Materials' expertise & Raytek Optics allow fabrication of CaF2 blanks in diameters up to 440mm and with a thickness exceeding 100mm and highest transmission down to 157nm.
The very high laser durability of CaF2 makes it the first choice material for lithoexcimer laser optics, beam deliveries, and for all excimer wavelengths in a wide range of other applications.
Synthetic calcium fluoride crystals complete the application range of optical materials from VUV to IR with a very good transmission ranging from 130nm to9µm. Advantages in optical performance can be achieved with calcium fluoride in chromatically corrected optical systems in astronomy photography, HDTV zoom lenses, as well as in microscopy. 

Main Characteristics:
1).Excellent UV Transmittance
2).High laser durability
3).Low stress birefringence
4).High refractive index homogeneity
5). Calcium fluoride features a very low spectral dispersion, a low non-linear refractive index and is available in sizes up to 440 mm diameter. These advantages make it a superior optical material for vacuum windows for spatial filters, target and compressor chambers.

Main Application:
1).IC Litho:Manufacturing tools
2).IC Litho: Excimer laser & beam delivery systems
3).Non-Litho: Laser & imaging optics
4).Femtosecond high power lasers
5).Low dispersion & low B-intgral vacuum windows

Thermal Properties:

Items	Value
Melting Point(ºC)	1420
Mean specific heat(Cp(20ºC-100ºC)	854 J / kg x K
Heat capacity at 20 °C	9.71 W/M.K
Linear thermal expansion coefficient α(20 °C; 300 °C)(10^-6/K) α(-30 °C; 70 °C)(10^-6/K) α(0 °C-25 °C) (10^-6/K)	21.28 18.41 18.50

Mechanical Properties:

Items	Value
Young's Modulus, E (25 °C) (Modulus of Elasticity)	75.8GPa
Shear Modulus, G (Modulus of Rigidity)	33.77GPa
Compressive Modulus, K	83.8GPa
Posssion's Ration u	0.26
Knoop Hardness(ISO 9385) HK	158.3
Mohs Hardness	4.0
Density (g/cm^3)	3.18
Grindability(ISO 12844)HG	6

Optical Properties:

Items	Value
Nonlinear refractive index	1.9*10^-16(CM^2W^-1)@1064nm
Refractive index	1.42848 @1064nm
Abbe number Vd	95.23
Thermal conductivity	9.71 (W/M.K)
Thermal expansion coefficient	18.41810^-6
Modulus of rupture	36.5MPa

Matching Custom Manufacturing Serivce:
Including Moulding, CNC machining, Polishing, Particle beam processing, Magnetic flux conversion processing, Grinding, Coating, Lightweighting, Custom Shaping, Counterbores, Drilling & Coring, Edge & Bevel Polishing,3D Contouring, Bevels & Chamfers, Steps & Slots, Laser Cutting & Marking, Metrology & Inspection, Precision Pitch Polishing, Double-Sided Polishing, Optical Assembly, Measuring, etc.
Matching processing equipments;
1).Single side lapping and polishing machines
2).Duble sided polishing machines
3).Ring throwing machines
4).DMG five-axis five-linkage spherical milling machine
5).DMG ultrasonic machining center
6).Super large scale gantry cnc machining center (2.0*2.0m)
7).Super large scale surface grinder (1.6m*1.6m)
8).CNC cutting machines
9).Thin plate cleaning machines
10).Ultrasonic trough cleaning machines
11).Plane interferometers
12).Two dimensional detectors
13).Ion beam polishing machines
14).Magnetorheological polishing equipments

Main Export Countries & Areas: 
Usa, Uk, Japan, Germany, Spain, France, Swiss, Korea, Russia, Pakistan, India, Portugal, Canada, New Zealand, Australia, Saudi Arab, Turkey, Finland, Poland ,etc.


Raytekoptics Extra value added services offered:
1). Optical workcraft & process solution design;
2). Rough processing raw materials;
3). Semi finishing raw materials;
4). Fabricate custom sizes and shapes;
5). Design and supply custom coatings;
6). Modify and resurface customer supplied materials;
7). Drill holes, notch glass and provide beveled substrates;
8). Precision polish optics with non-standard aspect ratios;

Payment Method: by T/T or Western Union.
Delivery time: 7-10 days.
Quality Warranty: Ruitaiphotoelectric(Raytekoptics) offers quality warranty for our optics products with "3R" policy--return, replace & refund policy.
For any inferior-quality products, Ruitaiphotoelectric(Raytekoptics) is responsible for return, replacement and refund.