Computational Investigations of THz Transmittance in the Atmosphere

Xingyu Yang, Casey Calhoun, Ronald Calhoun

Research output: Contribution to journalConference articlepeer-review

Abstract

With the recent scientific advancements in Terahertz (THz) wave propagation and reception technology, there has been significant development in new possibilities for using THz waves-offering new possibilities in THz detection and ranging. A first foundational step toward this goal is to better understand THz transmittance in the turbulent atmosphere. In this project, a frequency modulation pattern of THz waves was created by utilizing a system of shifting frequency based on temperature, air humidity, and distance of transmission. The total path loss of the wave in air, based on the wave spread and molecular absorption, was then modeled using radiative transfer theory, onto a set of JavaHAWK filtered-HITRAN data representative of an air sample. This data was used to generate a path loss matrix, which was then used to optimize frequency of transmission for the specific conditions. The concept to be evaluated is whether adaptive frequency modulated THz might usefully decrease transmission losses by adjusting to atmospheric conditions (such as local variations in temperature and humidity).

Original languageEnglish (US)
Article number06009
JournalEPJ Web of Conferences
Volume119
DOIs
StatePublished - Jun 7 2016
Event27th International Laser Radar Conference, ILRC 2015 - New York, United States
Duration: Jul 5 2015Jul 10 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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