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Glan-Thompson Polarizers

A Glan–Thompson Polarizer is made of two brifringent prisms which are cemented on their long surfaces. By arranging optical axes parallel to the plane of entrance, total internal reflection of s-polarized light at the air-gap ensures that only p-polarized light is transmitted by the device. The pair of prisms can, therefore, be used as a polarizer.

You may refer to this page (http://www.pmoptics.com/crystals.html) for material properties.

 

Features: 

  • High Polarization Purity
  • Wide acceptance angle
  • Wide wavelength Range
  • e-ray passing through with little deviation

Specification: 

Materials Alpha-BBO (200~1100nm) or Calcite (350~2300nm)
Dimensional Tolerance ± 0.1mm
Extinction Ratio Alpha-BBO < 1×10-6 ,  Calcite < 5×10-5
Angular Filed Alpha-BBO > 15°, Calcite > 14°
Transmittance TP > 95%
Flatness λ/4 @ 632.8nm
Surface Quality 20 ~ 10
Beam Deviation < 3 arc minutes
AR coating Single Layer MgF2 on input and output surfaces
Mount Black Anodized Aluminum

 

Ordering Information:

    P    G
  T
  P

   
  X 
     
           

A

 

B

 

C

 
     

A

 Wavelength

01 = 200 ~ 1100 nm for Alpha-BBO  
 02 = 350 ~ 2300 nm for Calcite  
 00 = Special  
 

B

 Material

 2 = Calcite
 
   3 = Alpha-BBO
 
   0 = Special  
 

C

 Dimensions

 01 = 6.0mm(φ1)X15.0mm(φ2)X18.0mm(L)  
   Check Standard Size Table Below  
   00 = Custom Dimensions  

 

Standard Size Table for Alpha-BBO only (See the Figure Above):  

  Dimensions P/N
Clear Aperture Φ1 (mm)
Outside Diameter Φ2 (mm) Length (L:mm)
  01
6.0
 15.0  18.0
   02
 8.0
 25.4 21.0
  03
10.0
 25.4  24.5
  04
15.0
 30.0  32.5
  05
20.0
 38.0  40.7

 

Standard Size Table for Calcite only :  

  Dimensions P/N
Clear Aperture Φ1 (mm)
Outside Diameter Φ2 (mm) Length (L:mm)
  01
6.0
 15.0  23.0
   02
 8.0
 25.4 28.0
  03
10.0
 25.4  33.0
  04
15.0
 30.0  45.5

 

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