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This thesis work focuses on the investigation of utilizing magnetoresistance phenomena in ferromagnetic metals to control the propagation of terahertz electromagnetic radiation confined to subwavelength structures. The purpose of this investigation is to study these phenomena as a potential...
Continuous wave terahertz frequency spectroscopy and imaging for explosives detection and security screeningsDownload
Continuous-wave terahertz (THz) spectroscopy was performed on high explosive materials using the Firefly-THz optical parametric oscillator (OPO). Cyclotetramethylene-tetranitramine (HMX), cyclotrimethylene-trinitramine (RDX), pentaerythritol-tetranitrate (PETN) and Composition-4 were scanned...
Over the last 5 years, tilted pulse-front terahertz (THz) generation has opened the door to new studies of nonlinear dynamics in a variety of materials. With access to strong electric fields that turn on and off over picosecond timescales exciting new possibilities exist to control light-matter...
This thesis focuses on the study of the electromagnetic properties of active spinplasmonic artificial materials. Artificial materials are composites having a macroscopic electromagnetic response that arises due to electromagnetic and electronic interactions between subwavelength sized elements....
Ultrafast terahertz (THz) microscopy is an emerging field of research that leverages the imaging of picosecond electric field transients to explore free carrier responses from a near-field perspective. This thesis presents the first effort made to use an electro-optic imaging system to probe the...
The main purpose of this thesis is to develop terahertz (THz) generation, detection, and spectroscopy techniques via ultrafast imaging methods. Sampling THz pulse waveforms with anoncollinear imaging technique was carried out. Full-field images of the THz electric field waveforms sampled in...