Femtosecond free-electron laser by chirped pulse amplification

Femtosecond free-electron laser by chirped pulse amplification.

Chirped pulse amplification in an extreme-ultraviolet free-electron laser

Chirped pulse amplification in optical lasers is a revolutionary technique, which allows the generation of extremely powerful femtosecond pulses in the infrared and visible spectral ranges. Such pulses are nowadays an indispensable tool for a myriad of applications, both in fundamental and applied research. In recent years, a strong need emerged for light sources producing ultra-short and inten...

The Chirped-pulse Inverse Free-electron Laser

We propose a new accelerating concept, the chirpedpulse inverse free-electron laser (CPIFEL). We study the inverse free-electron laser (IFEL) accelerator both theoretically and computationally, and show that by using a femtosecond (fs), ultra-high-intensity drive laser pulse, the IFEL interaction bandwidth and accelerating gradient are increased, thus yielding large energy gains. Using a chirpe...

Chirped-beam two-stage free-electron laser for high-power femtosecond x-ray pulse generation

A method for generating femtosecond-duration x-ray pulses with a free-electron laser is presented. This method uses an energy-chirped electron beam propagating through an undulator to produce a frequencychirped x-ray pulse by self-amplified spontaneous emission. A short temporal pulse is created by use of a monochromator to select a narrow radiation bandwidth. A second undulator is used to ampl...

Femtosecond Chirped Pulse Amplification in Cryogenically Cooled Yb,Na:CaF2

By seeding stretched pulses from a femtosecond Yb fiber oscillator into a cryogenically cooled DPSS regenerative amplifier based on a novel Na-co-doped Yb:CaF2 laser crystal, we obtain >3-mJ pulses at a 1-kHz repetition rate with a spectral bandwidth exceeding 12 nm. The pulses are compressed with a single grating compressor to 173 fs as verified by SHG FROG. Shaping of the spectral amplitude o...