Reasonable price Reflectors - THIN FILM POLARIZER – WISOPTIC
Reasonable price Reflectors - THIN FILM POLARIZER – WISOPTIC Detail:
Thin film polarizers are made from composed materials which include a polarizing film, an inner protective film, a pressure-sensitive adhesive layer, and an outer protective film. Polarizer is used to change un-polarized beam into linear polarized beam. When the light passes through the polarizer, one of the orthogonal polarization components is strongly absorbed by the polarizer and the other component is weakly absorbed, thus natural light is converted into linearly polarized light.
Polarization optics is important for both intra and extra cavity use. By having high contrast thin film polarizers in their design, laser engineers can save weight and volume within their devices without influencing the output. Compared with polarizing prism, polarizer has larger incident angle and can be made with larger apertures. Compared with polarizers made from birefringent crystals, the advantage of thin film polarizers is that they can be made in very large sizes, therefore can work in a laser device with high power or energy.
WISOPTIC Specifications – Thin Film Polarizers
Material | BK7, UVFS |
Diameter Tolerance | +0.0/-0.15 mm |
Thickness Tolerance | ± 0.1 mm |
Clear Aperture | > 90% of central area |
Surface Quality [S/D] | < 20/10 [S/D] |
Transmitted Wavefront Distortion | λ/10 @ 632.8 nm |
Parallelism | ≤ 30” |
Extinction Ratio (Tp/Ts) | > 200:1 |
Coating | High LDT coating upon request |
Laser Damage Threshold | 10 J/cm² @ 1064 nm, 10 ns, 10 Hz |
Comparison of Different Materials of Polarizers
YVO4 | Calcite | α-BBO | Quartz | |
Transparency Band | 500-4000 nm | 350-2300 nm | 220-3000 nm | 200-2300 nm |
Crystal Type (uniaxial) | Positive no=na=nb, ne=nc |
Negative no=na=nb, ne=nc |
Negative no=na=nb, ne=nc |
Positive no=na=nb, ne=nc |
Mohs Hardness | 5 | 3 | 4.5 | 7 |
Thermal Expansion Coefficient | aa=4.43×10-6/K ac=11.37×10-6/K |
aa=24.39×10-6/K ac=5.68×10-6/K |
aa=4×10-6/K ac=36×10-6/K |
aa=6.2×10-6/K ac=10.7×10-6/K |
Product detail pictures:
Related Product Guide:
We strive for excellence, service the customers", hopes to become the best cooperation team and dominator enterprise for personnel, suppliers and customers, realizes value share and continuous promotion for Reasonable price Reflectors - THIN FILM POLARIZER – WISOPTIC, The product will supply to all over the world, such as: Saudi Arabia, Venezuela, Mauritius, With the effort to keep pace with world's trend, we'll always endeavor to meet customers' demands. If you want develop any other new items, we can customize them to suit your needs. If you feel interest in any of our products and solutions or want develop new merchandise, you should feel free to contact us. We are looking forward to forming successful business relationship with customers all over the world.
By Carey from Jeddah - 2017.11.20 15:58
It's really lucky to find such a professional and responsible manufacturer, the product quality is good and delivery is timely, very nice.
By Marian from Saudi Arabia - 2018.04.25 16:46