High definition Mirror Lens - THIN FILM POLARIZER – WISOPTIC
High definition Mirror Lens - 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 |
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With a positive and progressive attitude to customer's interest, our enterprise continually improves our products excellent to meet the wants of customers and further focuses on safety, reliability, environmental requirements, and innovation of High definition Mirror Lens - THIN FILM POLARIZER – WISOPTIC, The product will supply to all over the world, such as: US, Thailand, Kuwait, Insisting over the high-quality generation line management and prospects guide provider, we've made our resolution to offer our shoppers using the initially stage purchasing and soon after provider working experience. Preserving the prevailing helpful relations with our prospects, we even now innovate our product lists the many time to meet up with the brand new wants and stick to the latest trend of this business in Ahmedabad. We're ready to facial area the difficulties and make the transform to grasp many of the possibilities in international trade.
By Chloe from Iceland - 2018.06.19 10:42
The product manager is a very hot and professional person, we have a pleasant conversation, and finally we reached a consensus agreement.
By Hilda from Georgia - 2018.09.29 13:24