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Yttrium alumate (YVO4) is an excellent birefringent crystal material, which is a negative uniaxial crystal. The crystal has good physical and mechanical properties, wide light transmission range, high transmittance, large birefringence coefficient and easy processing. YVO4 crystal can replace ice SPAR and crystal red stone in the field of optical fiber communication, is the key material in optical communication passive devices such as optical isolators, circulators, polarization splitters, polarizers.
Caicite Crystal is a kind of natural birefringent material, in the shape of diamond, birefringence coefficient is large, through the spectrum is wide, from visible to near infrared has relatively good optical properties. Although the mechanical strength of Iceland SPAR material is soft and easy to scratch, it still does not affect its wide application in polarization devices. Caicite is mainly used in Glan POLARIZER.
LiNbO3 is widely used in optical fiber communication as a birefringent crystal. The crystal has good physical and mechanical properties, wide light transmission range, high transmittance, easy processing, and lower material cost than other materials. Lithium niobate crystals are widely used in passive optical communication devices such as optical isolators, circulators, polarization splitters, polarizers, etc
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Polarized Optics
The polarization splitter prism is plated with a multilayer film structure on the inclined surface of the right Angle prism, and then glued into a cube structure. By taking advantage of the property that the transmission rate of P-polarized light is 1 and that of S-polarized light is less than 1 when the light incident at Brewster Angle, the P polarization component can be completely penetrated after the light passes through the multilayer film structure at Brewster Angle for many times. And most of the S polarization component is reflected. Note: Specific bands and extinction ratios can be customized according to customer requirements.
POLARIZING BEAM SPLITTER（PBS-HP）
The High Power PBS uses a special Optical Contacted technology, that is, optical bonding technology, its biggest advantage is that the mechanical strength after bonding is larger, the damage threshold is higher, which also means that the bonded product can be cut, polished, coated, coated and bonded, etc., without considering the impact of high temperature and high laser power on itself. Because there is no glue inside the High-Power PBS, the bonding face has almost no absorption of the laser, and the bonding surface will not be damaged due to high temperature.
NON POLARIZING BEAM SPLITTER（NPBS）
NON-POLARIZING BEAM SPLITTER (NPBS) is made of glass material, through the beamsplitting membrane of the beamsplitting medium to achieve the effect of depolarization, NPBS spectral ratio and the polarization state of the incident light is independent, can make the incident light of any polarization state into two beams of light output close to 1:1, the polarization state of the outgoing light is approximately the same as the incident light.
Brewster windows are commonly used for polarization in laser cavities. When placed at the Brewster angle, the P-polarized component of the beam will be completely transmitted, while the S-polarized component will be partially reflected, thus increasing the loss of the S-component in the cavity.
The natural light becomes polarized light, separating or combining the s polarization and p polarization components at 45° incidence angles. So that only light waves in a particular direction can pass through. By controlling the direction of light polarization to produce a specific effect. They are designed for use in high energy lasers. Polaroids made by UVFS have a high laser damage threshold.
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