Wire Grid Polarizers WGP10-VISIR-CRM

Wire Grid Polarizers — Model WGP10-VISIR-CRM

Wire grid polarizer, operating wavelength 420-1100 nm, clear aperture Ø10 mm, extinction ratio >200:1@420-520 nm, >1000:1@520-1100 nm.

Overview

The LBTEK Wire Grid Polarizers (WGPs) consist of two N-BK7 glass substrates with an aluminum wire grid polarizing film sandwiched in between, designed to generate linearly polarized light with a specific polarization orientation. When light passes through the metal wire grid, the periodically arranged metal wires interact with the electric field of the light, splitting it into electric field components parallel and perpendicular to the grid. The parallel component is absorbed or reflected by the metal wires, while the perpendicular component transmits through the grid, forming linearly polarized light. Compared with polymer polarizers, wire grid polarizers offer higher operating temperatures and damage thresholds. LBTEK provides wire grid polarizers with operating wavelength range of 420-1100 nm, available in two clear apertures (Ø10 mm/Ø21.5 mm) and two mounting options (installed with a retaining ring/installed in a rotation mount).

Key Features

• Extinction ratio: >200:1@420-520 nm, >1000:1@520-1100 nm
• Operating wavelength: 420-1100 nm
• Transmittance: Tp>75%@420-1100 nm
• Angle of incidence: ±20°
• Operating temperature: -40~93°C
• CW damage threshold: 100 W/cm@532 nm, Ø0.66 mm (parallel); 90 W/cm@532 nm, Ø0.82 mm (perpendicular)
• Housing: CRM-05AS

Applications

• Polarization control in scientific and industrial optical systems
• High-temperature laser polarization filtering
• Imaging, microscopy, and spectroscopy requiring high extinction ratio
• Wide AOI applications (±20° angle tolerance)
• UV-to-NIR broadband polarization (420-1100 nm)