Abstract: A single-shot terahertz imaging system including an interferometer and a terahertz spectrometer. The interferometer includes a beam splitter configured to receive input terahertz radiation and output first terahertz radiation and second terahertz radiation, a sample configured to reflect the first terahertz radiation, and a mirror configured to reflect the second terahertz radiation. The beam splitter is further configured to receive the reflected first terahertz radiation and the reflected second terahertz radiation, and output interfered terahertz radiation. The terahertz spectrometer is configured to measure the interfered terahertz radiation and includes a frequency dispersive element configured to receive the interfered terahertz radiation and output spatially dispersed terahertz radiation, and a terahertz radiation detector configured to determine the intensity of the spatially dispersed terahertz radiation.

Abstract: A terahertz endoscopic system including a flexible waveguide and system optics. The waveguide is configured to transmit terahertz radiation from a first end of the waveguide to a second end of the waveguide proximate to a sample, and transmit reflected terahertz radiation from the second end of the waveguide to the first end of the waveguide, wherein the reflected terahertz radiation is a portion of the terahertz radiation reflected by the sample towards the second end of the waveguide. The system optics are configured to direct the terahertz radiation from a radiation source into the first end of the waveguide, isolate the reflected terahertz radiation from other radiation, and direct the reflected terahertz radiation from the first end of the waveguide to a terahertz radiation detector.

Abstract: A single-shot terahertz imaging system including an interferometer and a terahertz spectrometer. The interferometer includes a beam splitter configured to receive input terahertz radiation and output first terahertz radiation and second terahertz radiation, a sample configured to reflect the first terahertz radiation, and a mirror configured to reflect the second terahertz radiation. The beam splitter is further configured to receive the reflected first terahertz radiation and the reflected second terahertz radiation, and output interfered terahertz radiation. The terahertz spectrometer is configured to measure the interfered terahertz radiation and includes a frequency dispersive element configured to receive the interfered terahertz radiation and output spatially dispersed terahertz radiation, and a terahertz radiation detector configured to determine the intensity of the spatially dispersed terahertz radiation.

Abstract: The present invention relates to the use of optical and terahertz imaging of tissue for measuring characteristics to assist in diagnosis. A light delivery and collection system is used that can aid in the detection of tumor margins, for example. A data processor processes the image data to determine characteristics of a region of tissue.