Comparison of visible and infrared backscattering Mueller matrices from roughened aluminum surfaces

Gareth D. Lewis; David L. Jordan; Scott D. Niven

doi:10.1117/12.366336

25 October 1999 Comparison of visible and infrared backscattering Mueller matrices from roughened aluminum surfaces

Gareth D. Lewis, David L. Jordan, Scott D. Niven

Proceedings Volume 3754, Polarization: Measurement, Analysis, and Remote Sensing II; (1999) https://doi.org/10.1117/12.366336
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

A comparison is made between the backscattering Mueller matrices of two bead-blasted aluminium samples at both 632.8nm HeNe and 10.6micrometers CO₂ lasers wavelengths. The samples are bead-blasted at two blasting pressures to vary the rms surface roughness and slope. These surfaces are characterized using a mechanical profilometer. Mueller matrices are determined with the detector fixed close to direct backscatter and the target angle varied between 0 degrees and 80 degrees. Results are presented of the angular variation of the major diagonal elements and off-diagonal elements m₁₂ and m₂₁ with increasing roughness to wavelength ratio. The copolarized scattering intensities and copolarized ratios derived from the Mueller matrices show similarities to microwave radar sea echo.

Citation Download Citation

Gareth D. Lewis, David L. Jordan, and Scott D. Niven "Comparison of visible and infrared backscattering Mueller matrices from roughened aluminum surfaces", Proc. SPIE 3754, Polarization: Measurement, Analysis, and Remote Sensing II, (25 October 1999); https://doi.org/10.1117/12.366336

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