Optics: measuring and testing – By polarized light examination – With polariscopes
Reexamination Certificate
2005-06-14
2005-06-14
Stafira, Michael P. (Department: 2877)
Optics: measuring and testing
By polarized light examination
With polariscopes
C356S368000
Reexamination Certificate
active
06906800
ABSTRACT:
Quantum well stacks are used in combination with linear gratings to determine the degree of polarization of incident light in terms of Stokes parameters. Interference from multiple reflections, diffractions and transmissions of the light propagating from and through the linear gratings modulates the absorption of the ±1-diffracted orders at each quantum well stack.Each quantum well stack is included in separate circuit having a voltage bias and a current meter. The voltage bias across each circuit is individually adjusted, and the photocurrent in each circuit, as measured by the respective current meter, is proportional to the flux of light absorbed by the respective quantum well stack. The four photocurrents are linearly mapped to the four Stokes parameters, which, in turn, represent the polarization of the incident light.
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Skorich James M.
Stafira Michael P.
The United States of America as represented by the Secretary of
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