Holographic Wire Grid Polarizers

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Optometrics

Optometrics manufactures holographic wire grid polarizers on CaF2 (Calcium Fluoride), ZnSe (Zinc Selenide), BaF2 (Barium Fluoride), KRS-5 and Ge (Germanium), covering a wavelength region from 2.5 to 30 microns.

Features

Wavelength region: 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

Anti-Reflective Coatings

Zinc Selenide’s transmission can be enhanced over a selected wavelength range, typically 9 to 11 microns, by an 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

Resources

Product SKUs

Product Listing

Substrate	CaF2	Size	35 mm dia.
Size Tolerance	±0.5 mm	Thickness	5.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	25 mm
Mount	Ring Mounted	Extinction ratio @ 3µ	150:1
extinction-ratio-8µ	300:1	surface-flatness	λ/20 @ 10.6μ
Parallelism	≤ 3 arc minutes	wire-grid-spacing	2700 grooves/mm
Collateral Assets	MAX.PDF,MIN.PDF

Substrate	CaF2	Size	38 mm dia.
Size Tolerance	±0.5 mm	Thickness	3.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	34 mm
Mount	Unmounted	Extinction ratio @ 3µ	150:1
extinction-ratio-8µ	300:1	surface-flatness	λ/10 @ 10.6μ
Parallelism	≤ 3 arc minutes	wire-grid-spacing	2700 grooves/mm
Collateral Assets	MAX.PDF,MIN.PDF

Substrate	CaF2	Size	50 mm dia.
Size Tolerance	±0.5 mm	Thickness	6.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	34 mm
Mount	Ring Mounted	Extinction ratio @ 3µ	150:1
extinction-ratio-8µ	300:1	surface-flatness	λ/10 @ 10.6μ
Parallelism	≤ 3 arc minutes	wire-grid-spacing	2700 grooves/mm
Collateral Assets	MAX.PDF,MIN.PDF

Substrate	CaF2	Size	50 mm dia.
Size Tolerance	±0.5 mm	Thickness	5.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	45 mm
Mount	Unmounted	Extinction ratio @ 3µ	150:1
extinction-ratio-8µ	300:1	surface-flatness	λ/10 @ 10.6μ
Parallelism	≤ 3 arc minutes	wire-grid-spacing	2700 grooves/mm
Collateral Assets	MAX.PDF,MIN.PDF

Substrate	GE (AR/AR)	Size	25 mm dia.
Size Tolerance	±0.5 mm	Thickness	5.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	18 mm
Mount	Ring Mounted	Extinction ratio @ 10.6µ	300:1
surface-flatness	λ/20 @ 10.6μ	Parallelism	≤ 3 arc minutes
wire-grid-spacing	2700 grooves/mm	Collateral Assets	MAX.PDF,MIN.PDF

Substrate	GE (AR/AR)	Size	25 mm dia.
Size Tolerance	±0.5 mm	Thickness	2.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	22.5 mm
Mount	Unmounted	Extinction ratio @ 10.6µ	300:1
surface-flatness	λ/20 @ 10.6μ	Parallelism	≤ 3 arc minutes
wire-grid-spacing	2700 grooves/mm	Collateral Assets	MAX.PDF,MIN.PDF

Substrate	GE (AR/AR)	Size	29 mm dia.
Size Tolerance	±0.5 mm	Thickness	2.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	25 mm
Mount	Unmounted	Extinction ratio @ 10.6µ	300:1
surface-flatness	λ/20 @ 10.6μ	Parallelism	≤ 3 arc minutes
wire-grid-spacing	2700 grooves/mm	Collateral Assets	MAX.PDF,MIN.PDF

Substrate	GE (AR/AR)	Size	35 mm dia.
Size Tolerance	±0.5 mm	Thickness	5.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	25 mm
Mount	Ring Mounted	Extinction ratio @ 10.6µ	300:1
surface-flatness	λ/20 @ 10.6μ	Parallelism	≤ 3 arc minutes
wire-grid-spacing	2700 grooves/mm	Collateral Assets	MAX.PDF,MIN.PDF

Substrate	GE (AR/AR)	Size	38 mm dia.
Size Tolerance	±0.5 mm	Thickness	3.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	34 mm
Mount	Unmounted	Extinction ratio @ 10.6µ	300:1
surface-flatness	λ/10 @ 10.6μ	Parallelism	≤ 3 arc minutes
wire-grid-spacing	2700 grooves/mm	Collateral Assets	MAX.PDF,MIN.PDF

Substrate	GE (AR/AR)	Size	50 mm dia.
Size Tolerance	±0.5 mm	Thickness	6.0 mm
Thickness Tolerance	±0.5 mm	Clear Aperture	34 mm
Mount	Ring Mounted	Extinction ratio @ 10.6µ	300:1
surface-flatness	λ/10 @ 10.6μ	Parallelism	≤ 3 arc minutes
wire-grid-spacing	2700 grooves/mm	Collateral Assets	MAX.PDF,MIN.PDF

Optometrics

Holographic Wire Grid Polarizers

Product SKUs

Product Listing

Holographic Wire Grid Polarizer, CaF2, 35 mm Dia., ring mounted

Holographic Wire Grid Polarizer, CaF2, 38 mm Dia., unmounted

Holographic Wire Grid Polarizer, CaF2, 50 mm Dia., ring mounted

Holographic Wire Grid Polarizer, CaF2, 50 mm Dia., unmounted

Holographic Wire Grid Polarizer, GE, 25 mm Dia., ring mounted

Holographic Wire Grid Polarizer, GE, 25 mm Dia., unmounted

Holographic Wire Grid Polarizer, GE, 29 mm Dia., unmounted

Holographic Wire Grid Polarizer, GE, 35 mm Dia., ring mounted

Holographic Wire Grid Polarizer, GE, 38 mm Dia., unmounted

Holographic Wire Grid Polarizer, GE, 50 mm Dia., ring mounted