product origin:
Chinashipping port:
Fuzhou Chinalead time:
4 working weekspayment:
T/T Payment, Western UnionSapphire Windows are manufactured from single crystal sapphire, making them ideal for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. Sapphire is the second hardest crystal next to diamonds and, because of their structural strength, sapphire windows can be made much thinner than other common dielectric windows with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3) and is useful in a transmission range from 0.2 - 5.5μm.
Common Specifications
Abbe Number (vd): 72.24
Birefringence (no-ne): 0.008 for Visible Light Orthogonal to Optical Axis
Clear Aperture (%): ≥90
Coating: Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C): 8.8
Density (g/cm3): 3.97
Index of Refraction nd: 1.77
Orientation of Axis: Random
Parallelism (arcmin): ≤3.5
Poisson's Ratio: 0.27
Substrate: Sapphire (Al2O3)
Surface Flatness: 2λ(typical)
Surface Quality: 80-50
Surface Roughness (μm): 0.1 per Inch
Wavelength Range (μm): 0.2 - 5.5
Wavelength Range (nm): 200 - 5500
Young's Modulus (GPa): 435
Knoop Hardness (GPa): 1900
Features:
Transmission in 0.3-5.0μm, no absorption in 2-3μm
Extremely hard and durable
High thermal conductivity
High bulk damage threshold
Note for Sapphire Window:
(1). Custom-made Sapphire windows at any size are available.
Besides round, Sapphire windows at the shape of quadrate, triangular, or other polygonal are available
(2). Other thickness from 0.5mm to 50.0 mm is available upon request.
(3). Better bevel is available upon request.
(4). Windows with Anti-Reflective(AR)
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IR Windows Calcium Fluoride CaF2 Windows
Calcium Fluoride windows and lenses for UV and IR spectrum. Custom made CaF2 windows, CaF2 lenses and wedges according to customer's specifications. CaF2 windows up to 220mm diameter; CaF2 wedges, prisms and CaF2 mirrors; Excimer CaF2 optics, Raman grade CaF2 optics and etc.
Magnesium Fluoride (MgF2) Windows
Magnesium Fluoride Windows applicable for wide range spectrum, transmits well into the VUV region at the hydrogen Lyman-alpha line and beyond and it is particularly useful for Excimer laser application.It is resistant to mechanical and thermal shock, to radiation, and is chemically stable.
IR Windows Germanium Windows
Silicon Windows
IR Windows Zinc Selenide(ZnSe) Windows
High Power Laser Line Windows
1、What are laser windows?
Laser Protect Windows(Laser protective glass, protective filters or welding protective windows) are used to save for the high cost of laser optics.
2、What are laser windows used for?
These windows are normally used in applications like laser cutting, laser welding machine, they are used for avoiding the high-precision laser optics damage by material splashes.
3、The key features of UNI Optics' Laser Windows
High Transmission
High Damage Threshold
Low Scatter
Low Absorption
Excellent Film Density
Excellent Environmental Stability
Typical Specifications:
Dimension: 4mm-80mm, round or square
Material: BK7, Fused Silica, ZnSe...etc
Surface quality: 10/5
Surface flatness: Lambda/10@632.8nm
Parallelism: 30’’
Roughness: 3A
Optical Crystals
Crystal are main applied for laser application. UNI OPTICS offers the following crystal products.
1. Laser Crystals and Rods: YAG crystal, Nd: YVO4 Crystal
2. Nonlinear Crystals: BBO, KTP, LiNbO3, LBO. KDP&DKDP
3. Birefringent Crystals: YVO4, a-BBO, Calcite.
Optical glass neutral density filters
A Neutral Density filter allows a photographer to control the exposure in an image very easily. The filter stops light reaching the camera sensor, therefore allowing us to leave the camera with a higher aperture for a longer amount of time.
UN-TFA1628L-20MP
· High relative illumination and high contrast
· Low distortion and excellent corner brightness
· High resolution
· Compatible with 1'' and 1.1'' 20MP camera
Tel : +86-591-86395085
Email : sales@uni-optics.com
