Broadband Polarization Grating LFG25H-50-T2
JCOPTIX offers broadband liquid crystal polymer polarization gratings. Each combines H-K9L glass and a functional polymer film made of two mirror-symmetric polarization grating layers. High diffraction efficiency and stable polarization control are maintained across 450-660 nm and 900-950 nm for visible and near-infrared multiwavelength or broadband sources. Retardance is constant across the clear aperture, while the fast-axis direction varies linearly across the optical region. Circularly polarized incident light is deflected into the +1 or -1 order according to handedness. Output remains circularly polarized with opposite handedness. For elliptical input, energy distribution between ±1 orders depends on the relative left- and right-circular components. JCOPTIX supports custom grating period, deflection angle, operating band, size, and retardance.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Operating Wavelength Band | 450-660 nm |
| Period | 50.0 μm |
| Diffraction Angle [@555 nm] | 0.64°@555 nm |
| Optical element material | Liquid Crystal Polymer and H-K9L Glass Substrate |
| Dimensions | 25.0 mm × 25.0 mm |
| Period Tolerance | ±100 nm |
| Diffraction Efficiency | >90% |
| Dimensional Tolerance | +0/-0.1 mm |
| Thickness | 1.6 mm |
| Thickness Tolerance | +0/-0.1 mm |
| Antireflection Coating Ravg [350-700 nm (6° Angle of Incidence, Single Side)] | Ravg<0.5% @350-700 nm (6° Incidence, Single Side) |
| Surface quality (scratch/dig) | 60/40 |
| Operating Temperature | -20-60 ℃ |
| Energy Utilization Efficiency | >85% |
| Damage Threshold [515 nm, 10 Hz, 202 fs, Ø113 µm] | 0.1 J/cm2(515 nm, 10 Hz, 202 fs, Ø113 µm) |
Key Features
Datasheet
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Supplier Information
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