— Holographic Wire Grid Polarizers — Overcoatings — Standard Sizes and Options — Highlights — Specifications

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.

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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.

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STANDARD SIZES AND OPTIONS
Holographic wire grid polarizers are currently available in a standard 25 mm diameter size, unmounted or mounted in a double protective ring, 38 mm diameter unmounted, 50 mm diameter mounted in a double protective ring and our newest line for FTIR Spectrometers in a 360° rotary mount with a 25 mm diameter clear aperture.

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

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HIGHLIGHTS

• 2700 grooves/mm
  
• 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

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SPECIFICATIONS

• Wire grid spacing 2700 grooves/mm (nominal)
  
• Parallelism: ≤ 3 arc minutes
  
• Substrate thickness 2 mm nominal
  
• Ring thickness: ± 0.1 mm
  
• Dimensional Tolerance: ±0.5 mm

Unmounted
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 APERTURE	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.

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($)*

1,325

1,385

1,415

1,125

1,195

1,625

1,625

1,795

1,475

2,195

2,195

2,650

* Prices are in USD and are list prices only.

Mounted (Protective Double Ring)
CATALOG NO.	5-8001	5-8101	5-8201	5-8301	5-401	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 mm	5.0	5.0	5.0	5.0	5.0	5.0	5.0
PRICE($)*	1,100	895	1,075	1,195	1,275	1,325	1,110

Mounted (Protective Double Ring)
CATALOG NO.	5-8231	5-8331	5-8021	5-8121	5-8221	5-8321	5-8421
SUBSTRATE	BaF2	KRS-5	ZnSe	CaF2	BaF2	KRS-5	GE (AR/AR)
CLEAR APERTURE	25 mm	25 mm	34 mm	34 mm	34 mm	34 mm	34 mm
OUTSIDE DIMENSION	35 mm dia.	35 mm dia.	50 mm dia.	50 mm dia.	50 mm dia.	50 mm dia.	50 mm dia.
RING THICKNESS mm	5.0	5.0	6.0	6.0	6.0	6.0	6.0
PRICE($)*	1,275	1,535	1,540	1,250	1,300	1,400	1,785

* Prices are in USD and are list prices only.

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