Spectral changes in the light scattered by a double-pass configuration

• Published in: Optics communications Vol. 231; no. 1; pp. 107 - 114
• Main Authors: Chaikina, E.I., Escamilla, H.M., Méndez, E.R.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.02.2004; Elsevier Science
• Subjects: Diffraction and scattering; Enhanced backscattering; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Multiple scattering; Optics; Physics; Scattering; Spectral shifts; Wave optics; Wave propagation, transmission and absorption; 42.25.Fx; 42.25.Bs; Enhanced backscattering; Multiple scattering; Scattering; Spectral shifts; Light scattering; Backscattering; Far field; Experimental device; Experimental study; Birefringent medium; Optical set up; Spectral line shift; Wave optics; Optical polarizers; Flat mirrors; Optical elements
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2003.12.038

We present a theoretical and experimental study of spectral changes in the light scattered by a double-pass system consisting of a random diffuser, a piece of birefringent crystal, a polarizer, and a plane mirror. Large spectral changes are predicted and observed in the far-field of this scattering system for certain directions of observation. A superluminescent diode with a spectrum of approximately Gaussian form and relatively large spectral width was used in the experimental work. The large spectral width permits the observation of spectral shifts of considerable magnitude.