A Novel Device for Generating Terahertz Radiation Pulses

TL;DR

This paper introduces a new device that uses a biased ionized particle oscillating between parallel plates to generate tunable terahertz radiation pulses, offering a broad wavelength adjustment range.

Contribution

It presents a novel device design based on oscillating ionized particles for generating tunable terahertz radiation, expanding the methods for controlling radiation frequency.

Findings

Oscillation frequency depends on charge density, bias voltage, and gap distance.

The device provides a broad wavelength tuning capability.

The system acts as a prototype for electric dipole radiation sources.

Abstract

The dynamics of a core-shell structured ionized particle between two parallel conductor plates, which is biased with a direct current (DC) voltage, have been investigated. It has been found that an ionized particle oscillates rapidly between the DC voltage biased parallel conductors, where the frequency of oscillation depends on the free-charge density carried by the particle, the DC bias voltage, and the gap across the two conductor plates. As the presented system involves a spatially oscillating ionized particle, it represents a natural prototype for the electric dipole radiation source. Since the frequency of oscillating ionized particle depends on the DC bias voltage across the parallel conductor plates, the presented device has a broad wavelength adjustment range for the emitted radiation.