Method of determining polarization profiles for polychromatic so

Details Method of determining polarization profiles for polychromatic so Method of determining polarization profiles for polychromatic so

1997-02-27

1998-03-31

Pham, Hoa Q.

Optics: measuring and testing

By polarized light examination

356367, G01J 400

Patent

active

057344736

ABSTRACT:
A method for determining polarization profiles of individual wavelengths hin a polychromatic source utilizes a variable filter system comprised of a retarder and a linear polarizer. Polychromatic light from the source is transmitted through the system and exits therefrom with attenuated intensities unique for each wavelength of the light. The attenuated intensities are recorded by a spectroradiometer and used to calculate Stokes parameters for each wavelength. The inherent problem of the retarder introducing a different phase differential for each individual wavelength transmitted therethrough is solved by expressing the Stokes parameters explicitly as a function of wavelength. The primary purpose of the method is to obtain the four Stokes parameters for individual bands of wavelength within a polychromatic light beam.

REFERENCES:
patent: 3700334 (1972-10-01), Low et al.
patent: 4681450 (1987-07-01), Azzam
patent: 5227623 (1993-07-01), Heffner
patent: 5396329 (1995-03-01), Kalawsky

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