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As electron kinetic energy and undulator parameters can be adapted as desired, free-electron lasers are tunable and can be built for a wider frequency range than any other type of laser, [3] currently ranging in wavelength from microwaves, through terahertz radiation and infrared, to the visible spectrum, ultraviolet, and X-ray.
Far-infrared laser or terahertz laser (FIR laser, THz laser) is a laser with output wavelength in between 30 and 1000 μm (frequency 0.3-10 THz), in the far infrared or terahertz frequency band of the electromagnetic spectrum. FIR lasers have application in terahertz spectroscopy, terahertz imaging as well in
By using a free-electron laser, one can generate longer THz pulses that are more suitable for detecting the Rabi oscillations directly. This technique could indeed demonstrate the Rabi oscillations, or actually the related Autler–Townes splitting, in experiments. [20]
UCSB Center for Terahertz Science and Technology (CTST) University of California, Santa Barbara, Santa Barbara, California: US Duke Free Electron Laser Laboratory (DFELL) Duke University, Durham, North Carolina: US 0.2 - 1.2 107.46 1994 Jefferson Laboratory Free Electron Laser (Jlab) Thomas Jefferson National Accelerator Facility, Newport News ...
Most vacuum electronic devices that are used for microwave generation can be modified to operate at terahertz frequencies, including the magnetron, [36] gyrotron, [37] synchrotron, [38] and free-electron laser. [39] Similarly, microwave detectors such as the tunnel diode have been re-engineered to detect at terahertz [40] and infrared [41 ...
Pages in category "Terahertz technology" The following 26 pages are in this category, out of 26 total. ... Far-infrared laser; Free-electron laser; G. Gunn diode;
Free-electron laser: A broad wavelength range (0.1 nm - several mm); a single FEL may be tunable over a wavelength range Relativistic electron beam: Atmospheric research, material science, medical applications. CO₂ gas dynamic laser: Several lines around 10.5 μm; other frequencies may be possible with different gas mixtures
The bandwidth of pulses generated by optical rectification is limited by the laser pulse duration, terahertz absorption in the crystal material, the thickness of the crystal, and a mismatch between the propagation speed of the laser pulse and the terahertz pulse inside the crystal. Typically, a thicker crystal will generate higher intensities ...