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PhD Course - Optical terahertz technology


Technical University of Denmark


General course objectives:
The student will get acquainted with modern technology for generation and detection of coherent signals in the terahertz frequency range and gain insight into selected modern scientific and technical applications of terahertz radiation, including experiments within nonlinear THz optics. The student will obtain in-depth knowledge about experimental and theoretical work, numerical simulations and data acquisition methods used in terahertz optics.

Learning objectives:
A student who has met the objectives of the course will be able to:
  • Account for basic theories for interaction between terahertz radiation and matter
  • Explain generation of ultrafast terahertz signals by photoconductive and nonlinear optical processes
  • Explain detection of ultrafast terahertz signals by photoconductive and nonlinear optical processes
  • Apply formalism for linear propagation of electromagnetic waves is absorptive and dispersive media
  • Apply the formalism for static and time-resolved terahertz time-domain spectroscopy for material characterization
  • Understand the principles behind terahertz optics (materials, optical components, waveguides, metamaterials)
  • Interpret experimental measurements and results based on theoretical models of selected physical phenomena on the picosecond and femtosecond time scale
  • Account for selected nonlinear optical effects in the THz range
  • Explain the principles of terahertz imaging and tomography

Contents:
The course works through basic theories of interaction between terahertz radiation and matter, optical methods for generation and detection of ultrafast terahertz signals and continuous-wave terahertz signals such as photoconductive antennas, nonlinear crystals and four-wave mixing in gases. The course covers theory for terahertz optics, including materials for terahertz applications, terahertz optical components, waveguides, and metamaterials. Spectroscopic applications of terahertz radiation will be discussed in-depth, with examples including spectroscopy of atoms, molecules, biological materials and semiconductor structures. Techniques for terahertz imaging and tomography will be covered. The course consists of an even distribution of introductory lectures, article discussions, simulation exercises, and practical demonstrations of generation, detection, spectroscopy and imaging using the mobile THz system at DTU Fotonik.

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Course organizer
Peter Uhd
Place/Venue
Anker Engelunds Vej 1
City
2800 Kgs. Lyngby
Country
Denmark
Workload
5
Link
http://kurser.dtu.dk/course/34495