Feasibility Study for the Generation of High Power Continuous Wave Terahertz Radiation using Frequency Difference Generation

TL;DR

This paper investigates the feasibility of generating high-power continuous wave terahertz radiation through frequency difference generation using a high-power IR laser and a periodically poled lithium niobate crystal, aiming for applications in wireless communication.

Contribution

It demonstrates the potential for efficient CW THz generation using commercially available high-power IR sources and PPLN crystals, advancing practical THz source development.

Findings

Feasibility of CW THz generation with high-power IR lasers.

Use of PPLN crystal for efficient frequency difference generation.

Potential application in high bit wireless communication.

Abstract

The goal of this report is to study the conditions for efficient THz generation using Frequency Difference Generation principle. In particular, two CW IR beams are used together with a periodically poled lithium niobate crystal in order to generate a continuous THz wave. As a source of the IR pump beams we consider a 30W (CW) IPG Er-doped fiber-amplifier which currently is the most powerful commercial amplifier on the market. The work is motivated by application of CW sources of THz waves in high bit wireless communication applications. The amplifier will allow to mix two optically modulated IR beams and to generate modulated THz signal.