Essays about: "THz"

Showing result 21 - 25 of 27 essays containing the word THz.

  1. 21. Characterization of Terahertz Radiation Generated in an Organic Crystal

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Åsa Bengtsson; [2016]
    Keywords : Nonlinear optics; Terahertz radiation generation; Optical rectification; Difference frequency generation; Organic crystal; DSTMS; Physics and Astronomy;

    Abstract : The terahertz region of the electromagnetic spectrum is an important research area allowing insights into fundamental science such as inter-molecular interactions, and with applications in the environmental, medical and security field. Using femtosecond lasers, it is possible to design compact and efficient terahertz generation schemes, resulting in few-cycle broadband pulses. READ MORE

  3. 22. Generation of Short Intense Terahertz pulses Through Optical Rectification

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

    Author : Carl Ekström; [2015]
    Keywords : Terahertz; THz; Optical Rectification; OR; Photonics; Optics; LiNbO3; Physics and Astronomy; Technology and Engineering;

    Abstract : The lack of sources that generates intense THz pulses have in many years limited the field of THz science. Until recently intense THz pulses have been hard to generate using nonlinear crystals such as Lithium Niobate (LiNbO3) with high efficiency. READ MORE

  4. 23. Characterization of a Zeeman Slower Designed for a 87 Sr Optical Clock

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Synkrotronljusfysik

    Author : Jonas Olsson; [2015]
    Keywords : metrology; time; frequency; atomic clock; optical clock; strontium; frequency comb; zeeman slower; arduino; Physics and Astronomy;

    Abstract : Optical clocks will potentially become the new frequency standard for the SI-definition of the second. Many national metrology institutes around the world have already implemented different versions of such clocks and others are in process of doing so. At SP Technical Research Institute of Sweden, this process has recently begun. READ MORE

  5. 24. Fabrication and Characterization of Tunneling Oxides on Graphene

    University essay from KTH/Mikroelektronik och tillämpad fysik, MAP

    Author : Melkamu Belete; [2013]
    Keywords : ;

    Abstract : Graphene base transistors (GBTs) are known to be novel devices mingling outstanding properties of graphene, with the concept of hot electron transistors (HETs). According to theoretical calculations, GBTs were predicted to have over 5 orders of magnitude ON/OFF current ratios and THz frequency range operations. READ MORE

  6. 25. Planar Antennas for Terahertz Detectors

    University essay from Avdelningen för elektronik, matematik och naturvetenskap

    Author : Zakir Hossain; [2012]
    Keywords : ;

    Abstract : The use of the millimeter-wave and terahertz (THz) systems are becoming very important in various scientific and military applications. In many applications i.e. radio-astronomy, THz imaging, remote sensing, secure communication links, THz radars, plasma diagnostics etc. READ MORE