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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 33, Iss. 7 — Mar. 1, 1994
  • pp: 1230–1241

Measurement of the Mueller scattering matrix by use of optical beats from a Zeeman laser

W. M. McClain, Wen-Haw Jeng, Biswajit Pati, Yaoming Shi, and Duan Tian  »View Author Affiliations


Applied Optics, Vol. 33, Issue 7, pp. 1230-1241 (1994)
http://dx.doi.org/10.1364/AO.33.001230


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Abstract

A two-frequency beam from a Zeeman laser scatters elastically from an isotropic medium, such as randomly oriented viruses or other particles suspended in water. The Zeeman effect splits the laser line by 250 kHz, and beats can be seen electronically in the signal from a phototube that views the scattered light. There are independently rotatable half-wave and quarter-wave retardation plates in the incident beam and a similar pair in the observed scattered beam, plus a fixed linear polarizer directly in front of the detector. Each of the four retarders has two angular positions, providing a total of 16 possible polarization cases. For each of the 16 cases, there are three data to be collected: (1) the average total intensity of the scattered light, (2) the amplitude of the beats in the scattered light, and (3) the phase shift between the beats of the scattered light and those of a reference signal from the laser. When a singular value decomposition technique is used, these threefold redundant data are rapidly transformed into a best-fit 4 × 4 Mueller scattering matrix. We discuss several different measurement strategies and their systematic and statistical errors. We present experimental results for two kinds of particle of wavelength size: polystyrene spheres and tobacco mosaic virus. In both cases the achiral retardation element M34 of the Mueller matrix is easily measurable.

© 1994 Optical Society of America

History
Original Manuscript: December 7, 1992
Revised Manuscript: May 19, 1993
Published: March 1, 1994

Citation
W. M. McClain, Wen-Haw Jeng, Biswajit Pati, Yaoming Shi, and Duan Tian, "Measurement of the Mueller scattering matrix by use of optical beats from a Zeeman laser," Appl. Opt. 33, 1230-1241 (1994)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-33-7-1230

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