Coherent Radiation from Free-Electron Lasers

Free-electron Lasers: Vacuum Electronic Generators of Coherent Radiation

Vacuum electronic sources have shown marked improvement since the invention of the magnetron before World War II, and dramatic increases in both average powers and frequencies have been achieved. Of course, much of these gains have been achieved by the development of different devices. The typical development pattern for a given device exhibits an initial period of rapid improvement followed by...

Ultrafast Coherent Diffraction Imaging with X-ray Free- Electron Lasers*

The ultrafast pulses from X-ray free-electron lasers will enable imaging of non-periodic objects at near-atomic resolution [1]. These objects could include single molecules, protein complexes, or virus particles. The specimen would be completely destroyed by the pulse in a Coulomb explosion, but that destruction will only happen after the pulse. The scattering from the sample will give structur...

Radiation resistant VUV coatings for Excimer- and Free Electron Lasers

Interference coatings for the vacuum ultraviolet spectral range (VUV) between 200 nm and 50 nm find several classical and innovative application fields in astronomy, semiconductor industry, synchrotron radiation optics, materials processing and medicine. Components comprise for example antireflective coatings, enhanced aluminum mirrors and broad band reflectors. Research on optical interference...

I Free Electron Lasers*

Free-electron lasers

CURRENT SCIENCE, VOL. 87, NO. 8, 25 OCTOBER 2004 1066 Srinivas Krishnagopal and Vinit Kumar are in the Centre for Advanced Technology, Indore 452 013, India; Srinivas Krishnagopal and S. K. Sarkar are in the Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India; Sudipta Maiti and S. S. Prabhu are in the Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005, In...