Phase measurements for beam splitters with coherent detection technique

Using a coherent detection technique, the measurement of the phase-relation between transmitted and reflected paths for beam splitters is presented. A change in the phase of p and s polarization components of the reflected and transmitted light for a beam splitter can be determined. Two measurement schemes are presented: one for polarizing beam splitters and one for nonpolarizing beam splitters. Experimental results for the case of a polarizing beam splitter are discussed.