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Glan-Thompson Polarizer

Glan Thompson PolarizerGlan-Thompson polarizer consists of two cemented prisms made from the highest optical grade Calcite or a-BBO. It offers the widest field of view of any other polarizers while maintaining a high extinction ratio. The standard form of this polarizer with 2.5:1 length to aperture (L/A) ratio has a full acceptance cone angle of more than 15° @ 589nm, symmetric about the input axis, whilst the long form with 3:1 ratio has a field angle of greater than 26°.

 

Glan-Thompson polarizer Specifications:

 

 Material

 a-BBO, Calcite

 Wavelength Range

 a-BBO: 200-1100nm; Calcite: 350-2300nm;

 Extinction Ratio

 Calcite:<5x10 -5 ; a -BBO:<5x10 -6

 Surface Quality

 20/10 scratch/dig

 Beam Deviation

 < 3 arc minutes

 Wavefront Distortion

 λ/4@632.8nm

 Damage Threshold

 >200MW/cm2

 Coating

 Single Layer MgF2

 Mount

 Black Anodized Aluminium

 

Standard Products:

1. a-BBO Glan Thompson Polarizer

 

Part No.

Aperture φa (mm)

O.D.

φd (mm)

L (mm)

L/A Ratio

Wavelength Range

Extinction Ratio

Angular Field

GMB06

6.0

15.0

22.0

1.6

200-1100nm

<5x10-6

>15.0°

GMB08

8.0

25.4

28.0

GMB10

10.0

25.4

33.0

GMB12

12.7

25.4

39.0

GMB15

15.0

30.0

45.5

 

2. Calcite Glan Thompson Polarizer

 

Part No.

Aperture φa (mm)

O.D.

φd (mm)

L (mm)

L/A Ratio

Angular Field

Extinction Ratio

Wavelength Range

GMC06A

6.0

15.0

22.0

2.5

14° ~ 16°

<5x10-5

350-2300nm

GMC08A

8.0

25.4

28.0

GMC10A

10.0

25.4

33.0

GMC12A

12.7

25.4

39.0

GMC15A

15.0

30.0

45.5

GMC06B

6.0

15.0

26.0

3.0

25° ~ 28°

GMC08B

8.0

25.4

32.0

GMC10B

10.0

25.4

38.0

GMC12B

12.7

25.4

46.0

GMC15B

15.0

30.0

53.0

  

Birefringent Crystal Material Data


 

    a-BBO  CrystalYVO4 CrystalCalcite CrystalQuartz CrystalMgF2 Crystal