Applications of far-infrared free-electron lasers to condensed-matter physics

1989 ◽  
Vol 6 (5) ◽  
pp. 1045 ◽  
Author(s):  
W. M. Dennis
Keyword(s):  
Free Electron ◽  
Condensed Matter ◽  
Far Infrared ◽  
Condensed Matter Physics ◽  
Free Electron Lasers

The advent of X-ray free electron lasers

Photoniques ◽  
2021 ◽  
pp. 22-26
Author(s):  
Marie-Emmanuelle Couprie
Keyword(s):  
Free Electron ◽  
Peak Power ◽  
Short Pulse ◽  
Far Infrared ◽  
Gain Medium ◽  
High Peak Power ◽  
X Rays ◽  
Free Electron Lasers ◽  
Free Electrons ◽  
X Ray

Free Electron Lasers (FEL) use free electrons in the periodic permanent magnetic field of an undulator as a gain medium. They extend from far infrared to X-rays, they are easily tunable and provide a high peak power. The advent of tunable intense (few mJ) short pulse (down to the attosecond regime) FELs with record multi GW peak power in the X-ray domain enables to explore new scientific areas. These unprecedent X-ray sources come along with versatile performance.

scholarly journals Electronic Modulation of THz Radiation at NovoFEL: Technical Aspects and Possible Applications

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3063 ◽  
Author(s):  
Oleg A. Shevchenko ◽  
Anatoly R. Melnikov ◽  
Sergey V. Tararyshkin ◽  
Yaroslav V. Getmanov ◽  
Stanislav S. Serednyakov ◽  
...  
Keyword(s):  
Free Electron ◽  
Peak Power ◽  
Time Window ◽  
Far Infrared ◽  
Thz Radiation ◽  
Free Electron Lasers ◽  
Paramagnetic Resonance ◽  
Time Resolved ◽  
Mid Infrared ◽  
Electron Paramagnetic

The Novosibirsk Free Electron Laser (NovoFEL) facility is able to produce high-power tunable terahertz (THz) laser radiation in quasi-continuous mode. The ability to control/shape this THz radiation is required in a number of user experiments. In this work we propose a modulation approach suitable for free electron lasers based on recuperation design. It allows for generating THz macropulses of a desirable length, down to several microseconds (limited by a quality factor of FEL optical resonator). Using this approach, macropulses in the time window from several microseconds to several hundred microseconds have been shown for three possible frequency ranges: mid-infrared (~1100 cm−1), far-infrared (~200 cm−1) and THz (~40 cm−1). In each case, the observed rise and decay of the macropulse have been measured and interpreted. The advantage of using short macropulses at the maximum peak power available has been demonstrated with the time-resolved Electron Paramagnetic Resonance (EPR) spectroscopy.

scholarly journals A helium nanodroplet setup for mid and far-infrared spectroscopy using pulsed-free-electron lasers: vibrational spectra of propargyl alcohol

RSC Advances ◽  
2017 ◽  
Vol 7 (86) ◽  
pp. 54318-54325 ◽  
Author(s):  
Devendra Mani ◽  
Theo Fischer ◽  
Raffael Schwan ◽  
Arghya Dey ◽  
Britta Redlich ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Free Electron ◽  
Free Electron Laser ◽  
Low Frequency ◽  
Far Infrared ◽  
Molecular Clusters ◽  
Free Electron Lasers ◽  
Far Infrared Spectroscopy ◽  
Molecular Motions ◽  
Helium Nanodroplets

Helium nanodroplets spectroscopy in combination with free electron laser. The combination is suitable for studying molecular clusters in 66–3600 cm−1 spectral range, covering the important low-frequency large amplitude intra and inter-molecular motions.

Metal-grating far-infrared free-electron lasers

1985 ◽  
Vol 21 (7) ◽  
pp. 920-923 ◽  
Author(s):  
J. Walsh ◽  
T. Buller ◽  
B. Johnson ◽  
G. Dattoli ◽  
F. Ciocci
Keyword(s):  
Free Electron ◽  
Far Infrared ◽  
Free Electron Lasers ◽  
Metal Grating
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