APPARATUS FOR SPR DETECTION CAPABLE OF SWITCHING BETWEEN IMAGING AND ANGULAR RESOLVED SPECTROSCOPY

摘要

Apparatus for surface plasmon resonance - SPR sensing, comprising a generation system (10) for generating a polarized light beam (PL), a SPR sensor plate (20) for receiving the polarized light (PL), a coupler (30) associated with the SPR sensor plate (20) for coupling the light with surface plasmons generated at a metal/dielectric interface (21) of the SPR sensor plate (20), a detector (40) for receiving a beam (RL) of light reflected by the SPR sensor plate (20). The apparatus furthermore comprises at least one optical element adjustable in focal length (50) disposed between the generation system (10) and the SPR sensor plate (20), by means of which the beam of polarized light (PL) has a focal point whose position is axially ad- justable relative to the SPR sensor plate (20).