Description
The Rochon crystal polarizing prism can be used to output the linearly polarized light with a high extinction ratio. To meet customers’ needs for different wavelength bands, Tuniu Rochon Crystal Polarizing Prisms are composed of two identical negative uniaxial crystal prisms (calcite or α-BBO) with the optical axes perpendicular to each other (both calcite and α-BBO are negative uniaxial crystals with no > ne. Calcite has excellent transmittance in the visible to near-infrared band, while α-BBO exhibits superior optical performance from ultraviolet to mid-infrared band). The prisms are bonded (for visible and infrared applications) or optically contacted (for ultraviolet applications), enabling higher power applications. When the natural light is incident, o-light emits without deflection, while e-light emits with deflection. The polarization directions of the two beams are mutually perpendicular, and the magnitude of the separation angle is related to the operating wavelength, the material, and prism wedge angle. Tuniu also offers various customization services, including special dimensions, design wavelengths, and other specifications. For specific customization needs, please contact us.
α-BBO Rochon Crystal Polarizing Prisms
The Rochon Prism is a polarization device composed of two negative uniaxial crystal prisms (calcite or α-BBO) with mutually perpendicular optical axes, bonded together through adhesive bonding or optical contact process. When the natural light is incident, two beams of linearly polarized light with orthogonal polarization directions and a certain separation angle can be obtained at the transmission end of the prism.
| Optical material | Laser-grade α-BBO | Structural Design | Optical contact process |
| Clear Aperture | Ø10 mm | Beam Deflection | <10 arcsec |
| Transmitted Wavefront Error (TWE) (@633 nm) | <λ/4,Ø8.5 mm | Operating Wavelength | 200 nm-3.5 μm |
| Extinction ratio | 100000: 1 | Protective Film | P coating@1064 nm |
| Separation angle | 8° REF@1064 nm | Housing Diameter | Ø25.4 mm + 0.0/-0.2 mm |
| Housing Thickness | 16.0 mm ± 0.1 mm | Surface Quality(Scratch/Dig) | 20/10 (emergent/incident surface) |
| Housing Thread | SM1 External Thread | Surface Flatness(@633 nm) | λ/8 (emergent/incident surface), Ø8.5 mm |

