First lasing at the high-power free electron laser at Siberian Center for Photochemistry Research

The first lasing near wavelength 140 mum was achieved in April 2003 on a high-power free electron laser (FEL) constructed at the Siberian Center for Photochemical Research. In this paper, we briefly describe the design of FEL driven by an accelerator-recuperator. Characteristics of the electron beam and terahertz laser radiation, obtained at the first experiments, are also presented in the paper. (C) 2004 Elsevier B.V. All rights reserved.