Terahertz (THz) technology refers to the use of electromagnetic waves with frequencies between 0.1 and 10 THz. For several decades, this frequency range has been a «gap» due to the lack of sources and detectors operating at that frequencies. Despite this, THz radiation has a number of properties that make it useful for a variety of scientific and technological applications in various fields including communications, sensing, imaging, spectroscopy and security. THz technology has the potential to revolutionize many areas of science including the study of fundamental low energy phenomena such as phonons, spin dynamics, etc. As time goes on, the «THz gap» is beginning to be filled with the refinement and development of new sources and detectors such as : photoconductive antennas and spintronic THz emitters to name a few. In order to generalize THz applications, it is necessary to design and study other sources and detectors. To this purpose, this PhD presents the results of my research focusing on the characterization of detectors (CdTe and ZnS) using THz time-domain spectroscopy with a Ytterbium (Yb) laser technology, follow by the development of a laser pulse compression technique and at the end, the demonstration of a new method of generating and modulating in parallel a THz pulse train using the combination of an echelon mirror, a digital micro-mirror device (DMD) and a spintronic THz emitter (STE).
| Date | 18 May 2023 |
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| Original language | French |
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| Awarding Institution | - École de technologie supérieure
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| Supervisor | François Blanchard (Supervisor) |
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Nkeck, J. E. (Author),
Blanchard (Supervisor),
18 May 2023Student thesis: Doctoral thesis › Doctorate in Engineering: Engineering