BaF2 window crystals or Barium Fluoride window crystals, with their extremely broad transmission range from the deep UV to LWIR spectrum, are prevalent for Infrared applications requiring additional transmission in the Ultraviolet region. BaF2 window crystals are excellent when being used for IR spectroscopes and as viewport windows for thermal imaging inspection in electric power facilities and petroleum industries. A low refractive index of 1.48 implies BaF2 windows have high transmission rates without anti-reflection coating.
BaF2 window crystals has similar properties to CaF2, the difference mainly lies in that barium fluoride window is more resistant to highly energetic radiation, and with an equivalent thickness, the transmission range of BaF2 window extends approximately 1 micron further into the long-wave IR region than calcium fluoride. BaF2 window crystals could also accommodate high-temperature environments up to 800 â??. However, exposure to moisture will increase its sensitivity to temperature and reduce its transmission rate to UV lights. If you would like to know more about BaF2 IR windows, BaF2 window crystals prices, please do not hesitate to contact Ost Photonics.
Infrared and ultraviolet windows/prism
High energy physics
Nuclear physics
Nuclear medicine
Advantages of BaF2 Window (Barium Fluoride Window)Crystals
Excellent Transmission from 200nm 12m
Resistant to High-Energy Radiation
Provide High Transmission without AR Coatings
CdWO4 Cadmium tungstate crystal is a high density, high atomic number scintillator with a relatively high light yield. The emission maximum is at 475nm and the total light output is 12 to 15 photons/keV. The light yield relative to NaI(Tl) on a bialkali PMT is 30 to 50%. In addition, CdWO4 Scintillator cadmium tungstate scintillator also has the advantages of strong radiation resistance and no radioactive background. The high light output and low afterglow make it ideal for use with silicon photodiodes in detectors for medical and industrial Computed Tomography (CT) scanners.
Ost Photonics is able to supply CdWO4 crystals cadmium tungstate scintillator and CdWO4 linear or 2-D array upon your requests.
Application of CdWO4 Scintillators (Cadmium Tungstate Scintillators)
Industrial computed tomography (CT) scanners
Medical computed tomography (CT) scanners
Security inspection
High energy physics
Advantages of CdWO4 Scintillator (Cadmium Tungstate Scintillator)
Low afterglow
Relatively high light yield
Strong radiation resistance
High density
high atomic number
No radioactive background
The Ability of OST Photonics CdWO4 Scintillators(Cadmium Tungstate Scintillators)
Maximum Size: �¸80mm x 200mm
Available items: monolithic crystal, linear or 2-D array
OST Photonics offers various functional crystal materials for laser systems, optical equipment and instruments. Crystals are divided into six types according to their functions: laser crystals (diffusion bonding crystals, Nd:YAG, Er:YAG, Yb:YAG, CTH:YAG, Nd:Ce:YAG, Nd:YVO4, Nd:GdVO4, Nd:YLF, Pr:YLF, Ho:YLF, Tm:YLF, Ti:Sapphire, Er:Yb: Glass), nonlinear crystals (KDP & DKDP), KTP, LiNbO3, LBO, BBO, BIBO), passive Q-switch crystals (Cr4+:YAG, Co2+:MgAl2O4), birefringent crystals (YVO4, �±-BBO), Magneto-optic Crystals (TGG) and optical crystals (BaF2, CaF2, MgF2, LiF, Germanium single crystal, Sapphire (Al2O3), YAG, ZnSe, Silicon single crystal, ZnS). If you want to know more about our functional crystals, please do not hesitate to contact OST Photonics.
What are Functional Crystals?
A wide range of functional crystal materials is used in various optical applications. While optical glass is commonly used as a transparent material, different functional crystal materials, primarily monocrystalline materials, are required for diverse applications due to their unique functionalities:
In contrast to glass, birefringent crystals can exhibit birefringence, which is a requirement for various types of polarizers, wave plates, birefringent tuners, and other optical components. Commonly used birefringent crystal materials include YVO4, �±-BBO, quartz, calcite and sapphire.
The lattice symmetry of a crystal material is not too high (such as a triangular, quadrilateral, or single prism), and it can exhibit nonlinearity. Nonlinear crystals are primarily used for nonlinear frequency conversion but also find applications in optical modulators like the Pokel cell.
A wide variety of functional crystal materials can be used as laser crystals, serving as host materials for laser-active dopants (rare earth ions or transition metal ions). They typically exhibit relatively high transition cross sections, small gain bandwidth, and good heat conduction compared to laser-active glasses. In general, they also allow for higher doping concentrations.
In some cases, functional crystal materials are used in spectral regions where glass does not have a wide enough wavelength range and high transmittance. In particular, various materials such as zinc sulfide (ZnS), zinc selenide (ZnSe) and Sapphire (Al2O3) are used as infrared crystals, and other materials such as lithium fluoride (LiF), calcium fluoride (CaF2) and magnesium fluoride (MgF2) are used as ultraviolet crystals.
Some functional crystal materials, such as terbium gallium garnet (TGG), exhibit the Faraday effect (polarization rotation caused by magnetic fields), and they can be utilized in devices like Faraday rotators and Faraday isolators.
OST Photonics offers various functional crystal materials for laser systems, optical equipment and instruments. Crystals are divided into six types according to their functions: laser crystals (diffusion bonding crystals, Nd:YAG, Er:YAG, Yb:YAG, CTH:YAG, Nd:Ce:YAG, Nd:YVO4, Nd:GdVO4, Nd:YLF, Pr:YLF, Ho:YLF, Tm:YLF, Ti:Sapphire, Er:Yb: Glass), nonlinear crystals (KDP & DKDP), KTP, LiNbO3, LBO, BBO, BIBO), passive Q-switch crystals (Cr4+:YAG, Co2+:MgAl2O4), birefringent crystals (YVO4, ±-BBO), Magneto-optic Crystals (TGG) and optical crystals (BaF2, CaF2, MgF2, LiF, Germanium single crystal, Sapphire (Al2O3), YAG, ZnSe, Silicon single crystal, ZnS). If you want to know more about our functional crystals, please do not hesitate to contact OST Photonics.
OST Photonics KDP Crystals/DKDP Laser Nonlinear Crystals
Potassium Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (DKDP, KD*P) are among the most widely-used commercial NLO materials. KDP crystals and DKDP crystals are commonly used for doubling, tripling and quadrupling of Nd:YAG laser at the room temperature. In addition, KDP crystals and DKDP crystals are also excellent electro-optic crystals with high electro-optic coefficients, widely used as electro-optical modulators, Q-switches, and Pockels Cells, etc. If you would like to know more about KDP crystals and DKDP crystals prices, please do not hesitate to contact Ost Photonics.
OST Photonics LiTaO3 Crystal Substrates
The chemical formula of lithium tantalate is LiTaO3, lithium tantalate crystal is colorless or yellowish crystal. LiTaO3 crystal is a ferroelectric crystal with excellent electro-optical, piezoelectric, electrical and pyroelectric properties. Use the pulling method to grow. The lithium tantalate crystal is used as a Q-switch in laser technology, as a pyroelectric detector in infrared technology, and can also be used to make filters and resonators.
OST Photonics BaF2 IR Windows Crystals
BaF2 window crystals or Barium Fluoride window crystals, with their extremely broad transmission range from the deep UV to LWIR spectrum, are prevalent for Infrared applications requiring additional transmission in the Ultraviolet region. BaF2 window crystals are excellent when being used for IR spectroscopes and as viewport windows for thermal imaging inspection in electric power facilities and petroleum industries. A low refractive index of 1.48 implies BaF2 crystal windows have high transmission rates without anti-reflection coating.
BaF2 window crystals has similar properties to CaF2, the difference mainly lies in that barium fluoride window is more resistant to highly energetic radiation, and with an equivalent thickness, the transmission range of BaF2 window extends approximately 1 micron further into the long-wave IR region than calcium fluoride. BaF2 window crystals could also accommodate high-temperature environments up to 800 â??. However, exposure to moisture will increase its sensitivity to temperature and reduce its transmission rate to UV lights. If you would like to know more about BaF2 IR windows, BaF2 window crystals prices, please do not hesitate to contact Ost Photonics.
OST Photonics CdWO4 Scintillators(Cadmium Tungstate Scintillators)
CdWO4 Cadmium tungstate crystal is a high density, high atomic number scintillator with a relatively high light yield. The emission maximum is at 475nm and the total light output is 12 to 15 photons/keV. The light yield relative to NaI(Tl) on a bialkali PMT is 30 to 50%. In addition, CdWO4 Scintillator cadmium tungstate scintillator also has the advantages of strong radiation resistance and no radioactive background. The high light output and low afterglow make it ideal for use with silicon photodiodes in detectors for medical and industrial Computed Tomography (CT) scanners.
OST Photonics is able to supply CdWO4 crystals cadmium tungstate scintillator and CdWO4 linear or 2-D array upon your requests.
OST Photonics can supply lithium niobate (LiNbO3) wafers, lithium tantalate (LiTaO3) wafers, quartz single crystal wafers, various glass and fused silica wafers, GaAs wafers, SiC wafers, InP wafers, sapphire (Al2O3) wafers, Ge wafers and Si wafers in different specifications. Square plates, blanks and crystal boules are also available upon request. Other single crystal substrate materials including MgAl2O4, MgO, SrTiO3, LaAlO3, GGG, DyScO3, GdScO3, TbScO3, KTN, PMN-PT, LSAT, SrLaAlO4, YAG, YAlO3 (YAP) are also available on request.
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What is the Difference Between SAW Grade Material and Optical Grade Material?
Optical grade materials are materials with low strain and no impurities, they are grown from the best raw materials at a relatively slow growth rate, and are often used in optical applications where the highest quality is required. Optical grade wafers are widely used in optical devices and require excellent optical performance.
SAW grade materials are primarily used in non-optical applications, and their growth raw materials rank second only to optical grade growth raw materials. The growth rate of this material is faster than that of optical grade material, which benefits mass production and cost-effectiveness.
In general, these grades of wafers vary in material quality and use. Optical grade wafers are considered to be of the highest quality, while SAW grade wafers are relatively lower in price. The selection of the appropriate wafer grade is crucial, depending on the specific application and material quality requirements.
±-BBO (±-BaB2O4) is a negative uniaxial crystal which has large birefringence over a broad transparent range of 190nm to 3500nm. ±-BBO is an excellent crystal especially in UV and high power applications.
The physical, chemical, thermal, and optical properties of alpha-BBO crystal are similar to those of Beta-BBO. However, there is no second order nonlinear effect in alpha-BBO crystal due to the centrosymmetry in its crystal structure and thus it has no use for second order nonlinear optical processes. Instead, alpha BBO is widely used for fabrication of polarizers, polarizing beam displacers, phase retarders, birefringent plates, and time delay compensators especially those for UV and high power lasers.
Applications of ±-BBO Crystals
High power Beam displacers for isolators.
High power Polarizer
Time delay compensators
Advantages of ±-BBO Crystals
High UV transmittance
Large birefringence
High damage threshold
Here at OST Photonics, we value integrity, accountability, and punctuality. Our vision is to be the most professional and reliable supplier of crystal products in the world.
Crystals such as sodium chloride (NaCl), potassium bromide (KBr) and potassium chloride (KCl) are uniform, bright and high transmittance within 0.250-20 �¼m when thickness less than 10mm, and no impurity absorption. These single crystals are ideal materials for making optical elements for prisms, lenses, filters, and various windows in infrared devices and optical instruments.
OST Photonics offers high quality KBr substrates for researchers and industries. Crystal orientation, size and thickness can be customized according to your requirements.
Application of KBr Substrates
Infrared devices
optical instruments
Advantages of KBr Substrate
Uniform, bright and high transmittance within 0.250-20 �¼m when thickness less than 10 mm
No impurity absorption
Ability of KBr Substrates
Orientation:,,, etc.
Dimension: 1, 2, 10x10mm, 20x20mm, etc.
Thickness: 0.5mm, 1.0mm, 2mm, 5mm, etc.
Available items: windows, substrates, blanks and customized optics
Li-6 lithium glass scintillator is a kind of inorganic scintillator which can be used for thermal neutron detection. It has the advantages of short decay time, high efficiency of slow neutron detection and good temperature performance. In addition, the Li-6 glass scintillator is easy to process and form, non-hygroscopic, acid and alkali resistant, can withstand the high and low temperature rapid change. Therefore, in the harsh situation that contains corrosive liquid and vapor, the lithium glass (Ce) can still work, but other scintillators cannot be suitable. Li-6 glass scintillator are widely used in neutron time-of-flight experiments, oil and natural gas exploration, moisture content measurement, nondestructive testing and neutron photography.
OST Photonics can provide different specifications of Li-6 glass scintillators according to your requirements.
Neutron time-of-flight experiments
Oil and natural gas exploration
Moisture content measurement
Nondestructive testing(NDT)
Neutron photography
Advantages of Li-6 Glass Scintillators
Fast decay time
High efficiency of slow neutron detection
Good temperature performance
Non-hygroscopic
The Ability of OST Photonics
Maximum Size: �¸50mm x 50mm
Available items: monolithic glass
Cerium-doped Lutetium Yttrium Orthosilicate or LYSO(Ce) scintillator has the advantages of high light output, high density, short decay time, excellent timing and energy resolution. These properties make LYSO(Ce) becoming the most popular scintillators in Nuclear medicine (Positron Emission Tomography, PET/CT, and SPECT scan system), high energy physics, security scanners, and other applications.
OST Photonics has a complete set of crystal processing and assembly line, we can process all kinds of lyso scintillation crystal and LYSO(Ce) arrays according to customer's requirements. We have our own laboratory to test the product performance to ensure that the product performance meets the requirements of our customers. We provide professional solutions for lyso crystal growth, surface treatment and array assembly.
Application of LYSO Ce Scintillators (LYSO:Ce Scintillators)
Positron emission tomography-computed tomography (PET-CT)
Nuclear magnetic resonance imaging (NMRI)
Single photon emission computed tomography (SPECT)
High energy physics
Advantages of LYSO scintillator (LYSO:Ce Scintillators)
High light output
High density
Short decay time
Stable chemical and physical lyso scintillator properties
The Ability of OST Photonics
Maximum Size: 105mm x 200mm
Available items: monolithic crystal, scintillation screen, pixellated array
OST Photonics GSGG Substrates
GGG (12.373) has a similar lattice constant of YIG (12.376), it is widely used as the substrate material of YIG magneto-optical thin film. However, in order to improve the magneto-optical optimum value of magneto-optical thin film, sometimes it is necessary to select a single crystal substrate with a larger lattice constant. GSGG (12.554) is that the 2 Ga of the octahedron in the GGG crystal are replaced by Sc with a larger ionic radius, thus having a larger lattice constant.
OST Photonics Cylindrical Lenses
Cylindrical lenses are utilized for astigmatism correction in the eye and rangefinders, inducing astigmatism by elongating a point of light into a line. They find extensive application in barcode scanning, projection optics systems, laser measurement systems, and holography. Ost Photonics offers cylindrical concave lens in plano-concave or plano-convex configurations.
Basics about Cylindrical Lenses
LENSES MATERIALS ILLUSTRATION PROPERTIES AND APPLICATIONS
CYLINDRICAL LENS BK7/ Fused Silica/CaF2 /other optical glass Used to provide focusing power in one section only. For illumination or detection of light from line sources. Also used for the anamorphic compression of beams and images.
Specifications of Cylindrical Lenses
Material Schott N-BK7, CDGM H-K9L, Fused silica, CaF2, Sapphire
Design wavelength 546.07nm
Design index (bk7) 1.51680 for BK7, 1.45846 for Fused Silica
Diameter tolerance +0.0, 0.15mm +0.0, 0.05mm
Paraxial focal length �±2% �±0.5%
Centration
Clear aperture 80% 90%
Surface quality 60-40 scratch and dig 10-5 Scratch and dig
Surface irregularity
Protective bevel 0.25 + 0.25, -0.0mm 0.2 �± 0.1mm
Coating Uncoating, AR or Single layer MgF2 coating upon request
What Is a Cylindrical Lens Used For?
Cylindrical lenses are specialized optical components used primarily to correct astigmatism, a common refractive error in the eye. Unlike spherical lenses, which have the same curvature in all directions, cylindrical lenses have curvature in only one direction. This unique property allows them to focus light into a line rather than a point, making them ideal for applications requiring precise control over light direction and focus. OST Photonics, a leader in cylindrical optics, offers high-quality cylindrical lenses designed to meet various optical needs.
