Shop for Holographic Wire Grid Polarizers | Optometrics, Dynasil

Optometrics

Holographic Wire Grid Polarizers

We manufacture holographic wire grid polarizers on ZnSe, CaF2, BaF2, KRS-5 and Ge, covering a wavelength region from 2.5 to 30 microns.

Features

2.5 to 30 microns
CaF2, ZnSe, BaF2, Ge and KRS-5 (Thallium Bromide) substrates
Finer grid pattern for better low wavelength performance
High Transmission
High extinction ratios
360° bench mountable, rotary stage for FTIR spectrometers

Anti-reflective Coatings

Zinc Selenide’s transmission can be enhanced over a selected wavelength range, typically 9 to 11 microns, by an anti-reflective (AR) coating on the rear surface.
Calcium Fluoride and Barium Fluoride have low refractive index values and do not see significant benefit from AR coatings.
KRS-5 is not normally AR coated, because this would limit its broad transmission range, which is its primary advantage.
Germanium polarizers are AR/AR coated to maximize transmission @10.6μ.
Due to the manufacturing process ruled wire grid polarizers are not offered with AR coatings.

Learn more about polarizers here.

Product SKUs

Holographic Wire Grid Polarizer Specifications | WP-H-K-29U

Extinction ratio @ 15µ	300:1	Substrate	KRS-5
Size (mm)	29 mm dia.	Size Tolerance	±0.5 mm
Thickness	2.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	25 mm	Mount	Unmounted
Surface Flatness	Does not apply to KRS-5	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

Holographic Wire Grid Polarizer Specifications | WP-H-K-25-35M

Extinction ratio @ 15µ	300:1	Substrate	KRS-5
Size (mm)	35 mm dia.	Size Tolerance	±0.5 mm
Thickness	5.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	25 mm	Mount	Ring Mounted
Surface Flatness	Does not apply to KRS-5	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

Holographic Wire Grid Polarizer Specifications | WP-H-K-34-38U

Extinction ratio @ 15µ	300:1	Substrate	KRS-5
Size (mm)	38 mm dia.	Size Tolerance	±0.5 mm
Thickness	3.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	34 mm	Mount	Unmounted
Surface Flatness	Does not apply to KRS-5	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

Holographic Wire Grid Polarizer Specifications | WP-H-K-34-50M

Extinction ratio @ 15µ	300:1	Substrate	KRS-5
Size (mm)	50 mm dia.	Size Tolerance	±0.5 mm
Thickness	6.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	34 mm	Mount	Ring Mounted
Surface Flatness	Does not apply to KRS-5	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

Holographic Wire Grid Polarizer Specifications | WP-H-Z-18-25M

Extinction ratio @ 10µ	300:1	Substrate	ZnSe
Size (mm)	25 mm dia.	Size Tolerance	±0.5 mm
Thickness	5.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	18 mm	Mount	Ring Mounted
Surface Flatness	λ/20 @ 10.6μ	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

Holographic Wire Grid Polarizer Specifications | WP-H-Z-22.5-25U

Extinction ratio @ 10µ	300:1	Substrate	ZnSe
Size (mm)	25 mm dia.	Size Tolerance	±0.5 mm
Thickness	2.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	22.5 mm	Mount	Unmounted
Surface Flatness	λ/20 @ 10.6μ	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

Holographic Wire Grid Polarizer Specifications | WP-H-Z-25-29U

Extinction ratio @ 10µ	300:1	Substrate	ZnSe
Size (mm)	29 mm dia.	Size Tolerance	±0.5 mm
Thickness	2.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	25 mm	Mount	Unmounted
Surface Flatness	λ/20 @ 10.6μ	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

Holographic Wire Grid Polarizer Specifications | WP-H-Z-25-35M

Extinction ratio @ 10µ	300:1	Substrate	ZnSe
Size (mm)	35 mm dia.	Size Tolerance	±0.5 mm
Thickness	5.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	25 mm	Mount	Ring Mounted
Surface Flatness	λ/20 @ 10.6μ	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

Holographic Wire Grid Polarizer Specifications | WP-H-Z-34-38U

Extinction ratio @ 10µ	300:1	Substrate	ZnSe
Size (mm)	38 mm dia.	Size Tolerance	±0.5 mm
Thickness	3.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	34 mm	Mount	Unmounted
Surface Flatness	λ/10 @ 10.6μ	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

Holographic Wire Grid Polarizer Specifications | WP-H-Z-34-50M

Extinction ratio @ 10µ	300:1	Substrate	ZnSe
Size (mm)	50 mm dia.	Size Tolerance	±0.5 mm
Thickness	6.0 mm	Thickness Tolerance	±0.5 mm
Clear Aperture	34 mm	Mount	Ring Mounted
Surface Flatness	λ/10 @ 10.6μ	Parallelism	≤ 3 arc minutes
Wire Grid Spacing	2700 grooves/mm

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