Two-Dimensional Second Harmonic Dispersion Interferometer
OwnerFrank Joseph Wessel, Fernando Brandiinventors
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Abstract
An interferometer having a fundamental beam generator, a first second harmonic generator, a waveplate, a second second harmonic generator, a harmonic separator, and a polarizing beam splitter, mounted uniaxially, (i.e., the components are aligned along one optical axis), wherein the interferometer is adapted to change a diameter of a beam to match a diameter of a sample, and to change the diameter of the beam back to its original diameter.
Claims17
An interferometer comprising a fundamental beam generator, a first second harmonic generator disposed after the fundamental beam generator, a waveplate disposed after the first second harmonic generator, a second second harmonic generator disposed after the waveplate, a harmonic separator disposed after the second second harmonic generator, and a polarizing beam splitter disposed after the harmonic separator, wherein the fundamental beam generator, the first second harmonic generator, the waveplate, the second second harmonic generator, the harmonic separator, and the polarizing beam splitter are all optically uniaxial.
An interferometer comprising a fundamental beam generator, a first second harmonic generator, a second second harmonic generator, a first lens, and a second lens, wherein the first second harmonic generator, the second second harmonic generator, the first lens, and the second lens are all optically uniaxial, wherein the first second harmonic generator is disposed before a location of a sample and the second second harmonic generator is disposed after said location.
A method for determining the optical characterization of a transparent medium sample using an interferometer, the method comprising the steps of:
- generating a linearly polarized fundamental beam;
- generating a first second harmonic beam having an orthogonal polarization to the fundamental beam;
- causing the fundamental beam and the first second harmonic beam to pass through the transparent medium;
- rotating the polarization of the first second harmonic beam by ninety degrees, such that to be parallel to the polarization of the fundamental beam;
- generating a second second harmonic beam having a polarization orthogonal to the fundamental beam and the first second harmonic beam;
- dumping the fundamental beam after passage through the transparent medium;
- and
- mixing the first and second second harmonic beams.
Dependencies are inferred from the claim text.