Glan-Thompson Polarizers

Calcite Glan-Thompson cemented prism polarizers give the largest aperture field angle product of all calcite polarizer designs and the lowest transmission losses. The cemented interface of the Glan-Thompson however, prevents their use with high power lasers. Applications of the Glan-Thompson include spectral polarimetry and general light polarization and analysis investigations.

In the standard form the length aperture ratio of L/A = 2.5 gives a useable angular polarised field symmetrical about the prism axis of greater than 14° while the long form L/A = achieves over 25°. For UV applications, it is advisable to use the shorter aspect ratio devices because the additional losses caused by the greater thickness of calcite are too high otherwise to be useful much below 400nm

Glan Thompson Polariser	End View Mounted