Polarizer has been widely used as the optical element forming linearly polarized light. Especially GlanTaylor polarized prism is well known with its highest extinction ratio (10-6) among many available polarizers and widely used to the applications requiring the excellent polarization purity and transmittance.

In this technical note, the Jasco V-7100/VAP-7070 polarizer film evaluation system will be explained for the evaluation of Glan-Taylor prism having such an extremely high extinction ratio.