Method and system for transmitting terahertz pulses
First Claim
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1. A terahertz (THz) transmitting system comprising:
- an antenna capable of generating a beam of THz radiation; and
a waveguide aligned with said beam, said waveguide having at least a first and a second conductive elongate element, wherein said first and second conductive elongate elements are substantially parallel, and wherein the first and second conductive elongate elements are configured to propagate a radially polarized beam of THz radiation and a linearly polarized beam of THz radiation.
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Abstract
Systems for THz transmission using new types of THz waveguides with low loss, negligible group velocity dispersion and structural simplicity are described herein. The THz system incorporates the use of a waveguide with two or more substantially parallel conductive elements which may enable many new THz sensing applications. It is now possible to direct the THz pulse inside of containers or around corners, where line-of-sight optics are not practical. Moreover, the systems allow use of either radially polarized or linearly polarized THz antennas. The disclosed systems are compatible with existing terahertz generation and detection techniques.
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Citations
28 Claims
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1. A terahertz (THz) transmitting system comprising:
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an antenna capable of generating a beam of THz radiation; and a waveguide aligned with said beam, said waveguide having at least a first and a second conductive elongate element, wherein said first and second conductive elongate elements are substantially parallel, and wherein the first and second conductive elongate elements are configured to propagate a radially polarized beam of THz radiation and a linearly polarized beam of THz radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for transmitting a terahertz signal comprising:
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a) aligning an antenna capable of generating a beam of THz radiation with a waveguide comprising at least a first and second conductive element; b) generating a beam of THz radiation by focusing a laser at said antenna; c) collimating and focusing said beam between the first and second conductive elements of said waveguide, wherein the first and second conductive elements are configured to propagate a radially polarized beam of THz radiation and a linearly polarized beam of THz radiation; and d) transmitting said beam along the length of said waveguide by propagating said beam between the first and second conductive elements. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A terahertz interferometer comprising:
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a THz emitter that generates THz radiation; a primary waveguide aligned with said emitter, said waveguide comprises at least a first and second conductive element, wherein the first and second conductive elements are configured to propagate a radially polarized beam of THz radiation and a linearly polarized beam of THz radiation, and wherein said at least first and second conductive elements diverge to form a sample waveguide and a reference waveguide; a sample chamber, wherein said sample waveguide passes through said sample chamber, wherein said sample waveguide and said reference waveguide rejoin to form a secondary waveguide; and a detector capable of receiving THz radiation, said detector aligned with said secondary waveguide. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification