Search for dissertations about: "THz detectors"
Showing result 1 - 5 of 10 swedish dissertations containing the words THz detectors.
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1. Graphene FET terahertz detectors on flexible substrates
Abstract : Terahertz (THz) science and technology have developed rapidly over the past decades, extending the THz application areas from spectroscopy and earth and space sciences to communications, biomedicine and security sensing. Many of these emerging applications require shape-conforming, light-weight and low-cost detectors rather than existing solid-state detection technology. READ MORE
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2. Superconducting THz mixers based on MgB2 film
Abstract : Superconducting NbN hot electron bolometer (HEB) mixers are widely used in terahertz radio astronomy. Such mixers have superior performance compared to SIS and Schottky diode mixers at frequency above 1THz. However, their drawback is a limited IF bandwidth. READ MORE
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3. Study of MgB2 HEB mixers at THz frequencies
Abstract : The terahertz (THz) range is very attractive for astronomical observations. Spectroscopy and photometry of remote space objects in the THz range allows for a study of their chemical composition, because this range covers rotational lines from simple molecules and electron transition lines from atoms and ions. READ MORE
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4. Study of MgB2 and YBa2Cu3O7-x Microbolometers for THz Sensing Applications
Abstract : In this thesis, two novel THz detectors based on magnesium diboride (MgB2)and yttrium barium copper oxide (YBa2Cu3O7-x) are presented. In particular,MgB2 superconductor is used for the investigation of hot-electron bolometer(HEB) mixers, while YBa2Cu3O7-x is explored in microbolometers for room-temperaturecoherent and incoherent detection. READ MORE
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5. Low and High Tc Bolometer Detectors for THz Frequencies
Abstract : .... READ MORE