Abstract
Time-domain terahertz spectroscopy (THz-TDS) is a valuable technique for studying collective ultrafast phenomena. Several mechanisms exist for converting ultrashort optical laser pulses into coherent THz sources. Broadband THz pulses can be obtained from electron currents in air plasma, which requires combinations of different colors of light to be most effective. I report multi-color generation schemes of THz pulses that deliver coherent THz output. Experimental and theoretical work using the photocurrent model describe ways to use non-harmonic color combinations to utilize several sources of light available in a table-top laser setup. Additionally, THz-TDS is used to study a variety of ultrafast electronic phenomena. I describe measurements of THz induced conductivity in high-speed semiconductors, discussed with carrier generation and carrier mobility mechanisms.
Degree
PhD
College and Department
Physical and Mathematical Sciences; Chemistry and Biochemistry
Rights
https://lib.byu.edu/about/copyright/
BYU ScholarsArchive Citation
Moss, Clayton D., "Terahertz from Electrons, Electronics from Terahertz" (2023). Theses and Dissertations. 10066.
https://scholarsarchive.byu.edu/etd/10066
Date Submitted
2023-08-16
Document Type
Dissertation
Handle
http://hdl.lib.byu.edu/1877/etd12904
Keywords
terahertz, ultrafast, spectroscopy, plasma terahertz, plasma generation, carrier dynamics
Language
english