Device for determining the intensity and phase of a coherent...

Details Device for determining the intensity and phase of a coherent... Device for determining the intensity and phase of a coherent...

2005-02-15

2005-02-15

Pham, Hoa Q. (Department: 2877)

Optics: measuring and testing

Lamp beam direction or pattern

Reexamination Certificate

active

06856387

ABSTRACT:
A device for determining the intensity and phase of a coherent light beam (F) in a cross-section of the beam comprises a calculator (1), a camera (2), a detector plane (3), an optical sampling element (4), and two mirrors (5, 6). The device measures the intensity Ii (i=1, . . . N) of the beam in N planes (N≧3). The camera (2) is equipped with a single detector plane (3). The optical sampling element (4) and the two mirrors (5, 6) assemble N distinct elementary beams, generated based on the coherent light beam (F), on N distinct zones of the single detector plane (3).

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Taylor, Leonard S., “The Phase Retrieval Problem”, Mar. 1981, IEEE Transactions on Antennas and Propagation, vol. AP-29, No. 2, pp. 386-391.

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