  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.
