A method to display and measure reflection and absorption loss in electromagnetic shields

Phenomena taking place into an electromagnetic shield are complex (absorption, reflection, transmission). They are determined by material/shield macroscopic parameters (/spl epsiv/, /spl mu/, /spl sigma/), its thickness, radiation's frequency and incidence angle. The paper deals with an original method for visualization and measurement of absorption, reflection and transmission by means of laser beam. This method has the advantage of simplicity and is dedicated to universities teaching EMC because of its suggestiveness.