@article{5663,
  author = {D. A. Jaroszynski and R. Prazeres and F. Glotin and J. M. Ortega and D. Oepts and A. F. G. van der Meer and G. Knippels and P. W. van Amersfoort},
  title = {Free-Electron Laser Operation and Self-Amplified Spontaneous Emission Using a Step-Tapered Undulator},
  abstract = {We present an experimental and theoretical evaluation of a new method of enhancing the efficiency and gain of the free-electron laser (FEL) and observations of self-amplified spontaneous emission at start-up of the step-tapered FEL. The stepped undulator is divided into two uniform sections of different deflection strengths, the upstream K-1 and the downstream K-2, and a step of Delta K = K-2 - K-1 approximate to 0.03 with K-1 < K-2 for mid-infrared operation.},
  year = {1995},
  journal = {Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment},
  volume = {358},
  number = {1-3},
  pages = {228-231},
  month = {Apr 11},
  isbn = {0168-9002},
  doi = {10.1016/0168-9002(94)01589-9},
  language = {eng},
}