Surface plasmon polaritons on thin metal films are a well studied phenomena when excited using prism coupled geometries such as the Kretschmann attenuated total reflection configuration. Here we describe a novel interference pattern in the conically scattered light emanating from such a configuration when illuminated by a focused beam. We observe conditions indicating only self-interference of scattered surface plasmon polaritions without any contributions from specular reflection. The spatial evolution of this field is described in the context of Fourier optics and has applications in highly sensitive surface plasmon based biosensing.
© 2013 Optical Society of America
Optics at Surfaces
Original Manuscript: December 5, 2012
Revised Manuscript: December 18, 2012
Manuscript Accepted: December 18, 2012
Published: January 16, 2013
Aaron Webster and Frank Vollmer, "Interference of conically scattered light in surface plasmon resonance," Opt. Lett. 38, 244-246 (2013)