Fiber laser-driven gas plasma-based generation of THz radiation with 50-mW average power

TL;DR

This paper demonstrates a high-repetition-rate, fiber laser-driven gas plasma method for generating THz radiation with an unprecedented average power of 50 mW, enabling advanced applications in material studies and imaging.

Contribution

It introduces a novel approach to scale THz average power using high-repetition-rate fiber laser-driven gas plasma, surpassing previous limitations.

Findings

Achieved 50 mW average THz power at high repetition rates

Demonstrated the feasibility of compact, high-power THz sources

Enabled potential for faster data acquisition and material studies

Abstract

We present on THz generation in the two-color gas plasma scheme driven by a high-power, ultrafast fiber laser system. The applied scheme is a promising approach for scaling the THz average power but it has been limited so far by the driving lasers to repetition rates up to 1 kHz. Here, we demonstrate recent results of THz generation operating at a two orders of magnitude higher repetition rate. This results in a unprecedented THz average power of 50 mW. The development of compact, table-top THz sources with high repetition rate and high field strength is crucial for studying nonlinear responses of materials, particle acceleration or faster data acquisition in imaging and spectroscopy.