Method of measuring a physical function using a composite function which includes the physical function and an arbitrary reference function
AssigneeThe Board of Trustees of the Leland Stanford Junior University
InventorsAydogan Ozcan, Michel J.F. Digonnet, Gordon S. Kino
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Abstract
A method for measuring a physical function forms a symmetric composite function by combining the physical function with a reference function. The method obtains a Fourier transform of the symmetric composite function. The method calculates an inverse Fourier transform of the obtained Fourier transform, wherein the calculated inverse Fourier transform provides information regarding the physical function. The physical function can be a nonlinearity profile of a sample with at least one sample surface. The physical function can alternatively by a sample temporal waveform of a sample optical pulse.
Claims25
A method of measuring a nonlinearity profile of a sample, the method comprising:
- providing a sample having a sample nonlinearity profile;
- placing a surface of the sample in proximity to a surface of a supplemental sample to form a composite sample having a composite nonlinearity profile;
- measuring a Fourier transform magnitude of the composite nonlinearity profile;
- and
- calculating the sample nonlinearity profile using the Fourier transform magnitude of the composite nonlinearity profile.
A method of measuring a nonlinearity profile of a sample, the method comprising:
- providing a sample having at least one sample surface and having a sample nonlinearity profile along a sample line through a predetermined point on the sample surface, the sample line oriented perpendicularly to the sample surface;
- measuring a Fourier transform magnitude of the sample nonlinearity profile;
- providing a reference material having at least one reference surface and having a reference nonlinearity profile along a reference line through a predetermined point on the reference surface, the reference line oriented perpendicularly to the reference surface;
- obtaining a Fourier transform magnitude of the reference nonlinearity profile;
- forming a first composite sample having a first composite nonlinearity profile by placing the sample and the reference material proximate to one another in a first configuration with the sample line substantially collinear with the reference line;
- measuring a Fourier transform magnitude of the first composite nonlinearity profile;
- forming a second composite sample having a second composite nonlinearity profile which is inequivalent to the first composite nonlinearity profile by placing the sample and the reference material proximate to one another in a second configuration with the sample line substantially collinear with the reference line;
- measuring a Fourier transform magnitude of the second composite nonlinearity profile;
- and
- calculating the sample nonlinearity profile using the Fourier transform magnitudes of the sample nonlinearity profile, the reference nonlinearity profile, the first composite nonlinearity profile, and the second composite nonlinearity profile.
A method of measuring a nonlinearity profile of a sample, the method comprising:
- providing a sample having at least one sample surface and having a sample nonlinearity profile along a sample line through a predetermined point on the sample surface, the sample line oriented perpendicularly to the sample surface;
- providing a reference material having at least one reference surface and having a reference nonlinearity profile along a reference line through a predetermined point on the reference surface, the reference line oriented perpendicularly to the reference surface;
- forming a first composite sample having a first composite nonlinearity profile by placing the sample and the reference material proximate to one another in a first configuration with the sample line substantially collinear with the reference line;
- measuring a Fourier transform magnitude of the first composite nonlinearity profile;
- forming a second composite sample having a second composite nonlinearity profile which is inequivalent to the first composite nonlinearity profile by placing the sample and the reference material proximate to one another in a second configuration with the sample line substantially collinear with the reference line;
- measuring a Fourier transform magnitude of the second composite nonlinearity profile;
- and
- calculating the sample nonlinearity profile using the Fourier transform magnitudes of the first composite nonlinearity profile and the second composite nonlinearity profile.
Dependencies are inferred from the claim text.