Matter manipulation with extreme terahertz light: Progress in the enabling THz technology

Worthwhile Relevance of Infrared Spectroscopy in Characterization of Samples and Concept of Infrared Spectroscopy-Based Synchrotron Radiation

“…is supports the coupling observation between different vibrational modes because of its extremely high time resolution [74]. It could also be used to observe molecular dynamics on a picoseconds timescale, though still mainly a new technique, but its knowledge is increasing for fundamental research [74,75]. As said previously, infrared spectroscopy could be used with other characterization techniques, such as two-dimensional nuclear magnetic resonance (NMR) [76,77].…”

“…Graphically, the nonlinear two-dimensional infrared spectrum is a two-dimensional correlation plot of the frequency ɷ 1 excited by the first pump pulses and frequency ɷ 3 excited by the probe pulse after the delay time. is supports the coupling observation between different vibrational modes because of its extremely high time resolution [74]. It could also be used to observe molecular dynamics on a picoseconds timescale, though still mainly a new technique, but its knowledge is increasing for fundamental research [74,75].…”

Optical magnetic lens: towards actively tunable terahertz optics

“…Let us describe a possible experimental setup for focusing THz light with a graphene-based lens. Reduced to its essentials, the setup can consist of just four key components: (1) the lens itself: a transparent substrate decorated with large-scale doped graphene fabricated with chemical vapour deposition; 44 (2) a THz source based on optical rectification from, e.g., a zinc telluride crystal 45 to generate an optical beam with a spectrum peaking at 1 THz; (3) a simple ring magnet to set the shape and focal length of the optical beam; (4) a THz beam imager based, for instance, on electro-optical sampling 45 or an array of microbolometers. 46 In practice, it is advantageous to place an additional thin current coil next to the ring magnet for fine tuning of the magnetic field curvature.…”

Generation of frequency-chirped density modulation electron beam for producing ultrashort THz radiation pulse

“…Terahertz (THz) radiation is finding its use in an increasingly wide variety of applications. Ultrashort flashes of strong electric or magnetic field transients of THz light have been employed to control and detect materials [1][2][3][4][5][6][7][8][9].…”