Terahertz Electromagnetic Imaging of Dielectric Materials
Abstract
Theoretical and computational methodologies for the investigation of the propagation of high frequency ultrashort electromagnetic pulses in dielectric materials were developed. The models incorporated nonlinearly forced Debye and nonlinear Debye polarization dynamics and demonstrated the importance of taking into consideration nonlinear effects especially when the amplitude of the input signal was large. The development of a Brillouin precursor was demonstrated in linear and nonlinear models and its attenuation rate was analyzed. This study readily extends to include the imaging problem, i.e., the identification of electromagnetic and geometric properties of a hidden substance. Related to the interaction of electromagnetic waves with the dynamics of rubber-like materials, molecular based models for the dynamic extension and shear of elastomer rods and blocks were developed and analyzed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 20, 2006
- Accession Number
- ADA455826
Entities
People
- Gabriella Pinter
Organizations
- University of Wisconsin–Milwaukee