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Glan Thompson Polarizers

issue date:2016-3-31 15:35:44 visit frequency:1446

Glan Thompson Polarizers

Glan Thompson polarizer is made of two calcite prisms or two a-BBO prisms cemented together .

Two types of Glan Thompsons are available .One is the standard form and the other is the long form. Their length to aperture ratios 2.5:1 and 3.0:1 respectively. Glan Thompson polarizers tend to have higher extinction ratio than air spaced polarizers .In the ultra violet spectrum, their transmission is limited by absorption in birefriengent materials as well as the cement layer.a-BBO polarizers and Calcite polarizers can be used from about 220 to 900nm and 350 to 2300nm respectively.

Glan Thompson Polarizers are ideal choices for applications requiring a large field of view and high extinction ratio.


Specification

Material

α-BBO,Calcite

Wavelength Rangee

α-BBO:200-900nm,Calcite:350-2300nm

Extinction Ratio

α-BBO:<5*10-5,Calcite:<5*10-6

Parallelism:

<1 arc Min

Surface Quality

20/10

Beam Deviation

<3 arc minutes

Wavefront Distortion

<λ/4@633nm

Damage Threshold

>200MW/cm2

Coating

Single MgF2

Mount

Black Anodized Aluminum

Below are the standard products of Glan-Thompson Polarizers:

Part No.

L/CA

Extinction Ratio

Angular Field(°)

C.A.Φa (mm)

O.D.Φd (mm)

L±0.1

(mm)

AGMP606

1.6

<5x10-6

>15°

6

15

18

AGMP612

12.7

25.4

29

AGMP615

15

30

33


Calcite Glan-Thompson Polarizer(350-2300nm)

Part No.

L/CA

Extinction Ratio

Angular Field(°)

C.A.Φa (mm)

O.D.Φd (mm)

L±0.1

(mm)

CGPS706

2.5

<5x10-5

14°-16°

6

15

23

CGPS712

12.7

25.4

39

CGPS715

15

30

45.5

CGPS726

3

<5x10-6

25°-28°

5

15

21

CGPS732

11.4

25.4

41

CGPS735

13.5

30

48