Phase retardation measurement in simple and reverse Senarmont compensators without calibrated quarter wave plates

摘要

The modification of the Senarmont compensator is presented. It uses standard simple and reverse Senarmont ups ups, however, the phase retardances of unknown medium as well as the element used as a quarterwave plate in classical setups could be measured. It leads to conclusion that retardations of two unknown elements could be obtained and no calibrated quarter wave plate is needed. [References: 4]