Measurement of the Complex Refractive Index of Isotropic Materials with Mueller Matrix Polarimetry
Applied Optics, Vol. 40, Issue 22, pp. 3659-3667 (2001)
http://dx.doi.org/10.1364/AO.40.003659
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Abstract
The complex refractive index of materials at infrared wavelengths is often determined when absorption measurements are made at selected wavelengths, and then the Kramers–Kronig relationship is used to calculate the real part of the index. Because many organic materials are highly absorbing in the infrared, absorption measurements require a short path length. We report on the use of an attenuated total internal reflection (TIR) method in combination with an infrared Mueller matrix spectropolarimeter to measure the Mueller matrix spectrum of samples from 3 to 14 μm. From the elements of the Mueller matrix the complex refractive index is determined for materials whose TIR interfaces are eigenstates of s and p polarization. The calculated index for water compares well with data found in the literature.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(070.4790) Fourier optics and signal processing : Spectrum analysis
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
Citation
Lynn L. Deibler and Matthew H. Smith, "Measurement of the Complex Refractive Index of Isotropic Materials with Mueller Matrix Polarimetry," Appl. Opt. 40, 3659-3667 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-22-3659
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