Holographic Wire Grid Polarizers

Working with experts in the field, Optometrics has developed a special holographic technique to produce Infrared Polarizers with sub-micron grid spacing. In the Companys holographic laboratory, an interferometrically generated interference pattern is produced from monochromatic light and exposed onto a photo-resist coated substrate. Once developed, the resist has a regular sinusoidal profile which is vacuum aluminized at an oblique angle to create the array of parallel conductors.

The fabrication of holographic wire grid polarizers permits the use of a wide variety of infrared materials that do not lend themselves to the ruling process. They are available with a spacing of 2700 grooves/mm for optimum short-wavelength efficiency.

Product Selection

  • Wire grid spacing 2700 grooves/mm (nominal)
  • Parallelism: ≤ 3 arc minutes
  • Surface flatness - N20 @ 10.6e up to 25mm C.A.
  • Substrate Thickness
             For sizes under 30mm    ...........................................................  2mm
             For sizes 30-49mm         ...........................................................  3mm
             For sizes 2≥49mm          ...........................................................  5mm  
  • Dimensional Tolerance: ±0.5 mm
  • Excludes KRS - 5
Nominal Extinction Ratios
Material Wavelength(microns) Typical Extinction Ratio
CaF2 3
8
150
300
BaF2 3
10
150
300
ZnSe 3
10
150
300
KRS-5 3
15
150
300
Ge
(AR\AR)
10.6 300

 

 

 

CAUTION: The surface of a wire grid polarizer, like any diffraction grating, is extremely delicate. Nothing should ever be allowed to touch the surface of the polarizer. Handling, when necessary, should be by the edge only and with protected fingers. Careful removal of dust by gentle air flow is the only cleaning procedure recommended by Optometrics. Particular care should be used when handling KRS-5.

Holographic Wire Grid Polarizers
Unmounted

(Add $495 for AR Coating (rear surface only) on ZnSe ≤38mm dia. or $895 for 50mm dia.)

CATALOG NO. 5-8003 5-8103 5-8203 5-8303 5-8403 5-8004 5-8104 5-8204
SUBSTRATE ZnSe CaF2 BaF2 KRS-5 GE (AR/AR) ZnSe CaF2 BaF2
CLEAR
APERATURE
22.5 mm 22.5 mm 22.5 mm 22.5 mm 22.5 mm 25 mm 25 mm 25 mm
OUTSIDE
DIMENSIONS
25 mm dia. 25 mm dia. 25 mm dia. 25 mm dia. 25 mm dia. 29 mm dia. 29 mm dia. 29 mm dia.
PRICE ($)* 1,110 885 1,125 1,375 1,170 1,255 1,095 1,235

* Prices are in USD and are list prices only.
 

Holographic Wire Grid Polarizers
Unmounted
CATALOG NO 5-8304 5-8404 5-8011 5-8111 5-8211 5-8311 5-8411 5-8015 5-8115 5-8215 5-8315 5-8415
SUBSTRATE KRS-5 GE (AR/AR) ZnSe CaF2 BaF2 KRS-5 GE (AR/AR) ZnSe CaF2 BaF2 KRS-5 GE (AR/AR)
CLEAR
APERTURE
25 mm 25 mm 34 mm 34 mm 34 mm 34 mm 34 mm 45 mm 45 mm 45 mm 45 mm 45 mm
OUTSIDE
DIMENSIONS
29 mm dia. 29 mm dia. 38 mm dia. 38 mm dia. 38 mm dia. 38 mm dia. 38 mm dia. 50 mm dia. 50 mm dia. 50 mm dia. 50 mm dia. 50 mm dia.
PRICE ($)* 1,650 1,385 1,490 1,250 1,325 1,895 1,625 1,890 1,640 1,770 2,875 2,995

* Prices are in USD and are list prices only.

Holographic Wire Grid Polarizers
Mounted (Protective Double Ring)
 
CATALOG NO. 5-8001 5-8101 5-8201 5-8301 5-8401 5-8031 5-8131
SUBSTRATE ZnSe CaF2 BaF2 KRS-5 GE (AR/AR) ZnSe CaF2
CLEAR
APERTURE
18 mm 18 mm 18 mm 18 mm 18 mm 25 mm 25 mm
OUTSIDE
DIMENSION
25 mm dia. 25 mm dia. 25 mm dia. 25 mm dia. 25 mm dia. 35 mm dia. 35 mm dia.
RING THICKNESS 5.0 mm 5.0 mm 5.0 mm 5.0 mm 5.0 mm 5.0 mm 5.0 mm
PRICE ($)* 1,190 995 1,195 1,650 1,275 1,395 1,235

* Prices are in USD and are list prices only.
 

Holographic Wire Grid Polarizers
Mounted (Protective Double Ring)
CATALOG NO. 5-8231 5-8331 5-8431 5-8021 5-8121 5-8221 5-8321 5-8421
SUBSTRATE BaF2 KRS-5 GE (AR / AR) ZnSe CaF2 BaF2 KRS-5 GE (AR/AR)
CLEAR
APERTURE
25 mm 25 mm 25mm 34 mm 34 mm 34 mm 34 mm 34 mm
OUTSIDE
DIMENSION
35 mm dia. 35 mm dia. 35mm dia. 50 mm dia. 50 mm dia. 50 mm dia. 50 mm dia. 50 mm dia.
RING THICKNESS 5.0 mm 5.0 mm 5.0 mm 6.0 mm 6.0 mm 6.0 mm 6.0 mm 6.0 mm
PRICE ($)* 1,370 1,795 1.535 1,620 1,385 1,445 2,035 1,785

* Prices are in USD and are list prices only.

Holographic Wire Grid Polarizers
Mounted in 360° Rotary Mount

with adapter, post and breadboard screws suitable for breadboards, bench mounting and IR spectrometer applications.  Available for Holographic Wire Grid Polarizers only.
CATALOG NO. 5-8005 5-8105 5-8205 5-8305 5-8405
SUBSTRATE ZnSe CaF2 BaF2 KRS-5 GE (AR/AR)
CLEAR
APERTURE
25 mm 25 mm 25 mm 25 mm 25 mm
PRICE ($)* 2,115 1,855 2,035 2,225 2,450
 
* Prices are in USD and are list prices only.

 
 
CATALOG NO.   PRICE($)
5-2146
 
Rotary stage. Bench mountable stage allows 360° rotation of wire grid polarizer in 25 mm diameter protective ring. For all above polarizers ≤ 25 mm. 230.00
5-2147 Rotary stage. Bench mountable stage allows 360° rotation of wire grid polarizer in 50 mm diameter protective ring. For all above polarizers ≥ 38 mm. 385.00
5-2148 Adapter. Allows 15 mm square wire grid polarizers to be used in 5-2146 rotary stage. 80.00

* Prices are in USD and are list prices only.
 

Standard Sizes and Options

Holographic wire grid polarizers are currently available in several standard sizes from 25mm diameter up to 50mm diameter both mounted and unmounted.

If your application requires a different size or shape, please contact us for price and delivery. OEM inquires are welcome.

Overcoatings

Calcium Fluoride and Barium Fluoride have low refractive index (high Tx) values and do not require anti-reflective (AR) coatings.

Zinc Selenide has a high refractive index and transmission at specific wavelength regions which can be enhanced by an AR coating on the rear surface only. Zinc Selenide is usually optimized for transmission at specific laser lines, typically from 9 to 11 microns.

KRS-5 is not normally AR coated, because this would limit its broad transmission range, which is its primary advantage.
Germanium is AR/AR coated to maximize transmission @ 10.6 microns.

Highlights

  • 2700 grooves/mm for improved short wavelength performance
  • On Calcium Fluoride (CaF2), Barium Fluoride (BaF2), Zinc Selenide (ZnSe), KRS-5 and Germanium (Ge)
  • For improved short wavelength performance
  • Extended infrared range
  • High transmission
  • High extinction ratios
  • 360° bench mountable, rotary stage for FTIR spectrometers
  • All polarizers can be mounted in a double protective ring
Go to top