IMF2017

With the advancements in femto-second laser technology and the coherent generation and detection of Terahertz(THz) radiation (ranging from 0.1 THz to 30 THz), this spectral region is finding applications in various disciplines like imaging, communications, explosive-detection, spectroscopy of molecular vibrations etc. However, in order to realize full-fledged THz applications, efforts need to be directed towards the design and implementation of efficient THz modulators and switches. In this work the interaction of THz waves with different ferroic and multiferroic materials has been performed employing time-domain spectroscopic detection technique to reveal the role of their ferroic behaviours in the propagation control of THz waves. Temporal traces thus recorded using optical interferometry has been converted to its frequency domain responses. External field-dependent index of refraction and absorption coefficient dispersion function and their influence on the THz propagation has been retrieved for the design of dynamically controlled THz modulators. These modulators are envisioned to be the opto-electronic units for the future optical-communication/computing.