• High Extinction Ratio and Laser Damage Threshold
• Ø12.5 mm
• Unmounted
• Resistant to UV Radiation and Chemicals

This Thorlabs’ Nanoparticle Linear Film Polarizer is comprised from spherical ellipsoid nanoparticles that have been embedded in sodium-silicate glass, thereby generating a polarizing effect. It offers superior performance compared to conventional, polymer-based polarizers. While both conventional and nanoparticle polarizers absorb the light that is polarized perpendicular to the transmission axis, the nanoparticles have a significantly higher damage threshold and a dramatically better extinction ratio.

• Wavelength Range: 365 - 395 nm
• Extinction Ratios: (100,000 : 1) 372 - 388 nm; (10,000 : 1) 369 - 390 nm; (1000 : 1) 365 - 395 nm
• Polarizing Material: Nanoparticles in Sodium-Silicate Glass
• Substrate Material: Schott Glass B270
• Diameter (Tolerance): 12.5 mm ±0.2 mm
• Clear Aperture: 90% of Surface Dimension
• Thickness: 2.0 ±0.2 mm
• Wavefront Distortion: <λ/4 @ 633 nm
• Surface Quality Surface Imperfections: 5/2 x 0.04 within 1 cm² acc. (ISO 10110-07)
• Acceptance Angle: ±20°
• Laser Damage Threshold: 1 W/cm² Continuous Block; 5 W/cm² Continuous Pass
• Operating Temperature: -20 to +120 °C
• Maintenance Clean with Standard Cleaning Solvents