Studies on the Gyrotrons as Promising Radiation Sources for THz Sensing and Imaging

Gyrotrons are powerful sources of coherent radiation in pulsed and CW (continuous wave) regimes that can work. Their recent progress into higher frequencies has entered the THz area and opened the way for many new applications in the large science and technology fields of high-power terahertz. These include advanced spectroscopic techniques, notably NMRDNP (Nuclear Magnetic Resonance with signal enhancement by Dynamic Nuclear Polarization), ESR (Electron Spin Resonance) spectroscopy, precise positronium HFS (hyperfine splitting) measurement spectroscopy, etc. Other notable Applications include processing of materials (e.g. thermal treatment and sintering of advanced ceramics), remote detection of hidden nuclear materials, radar, biological and medical studies, to name only a few. Imaging and sensing for inspection and control in various technical processes (such as food production), defence, etc. are among prospective and emerging applications that use gyrotrons as radiation sources. In this article, we summarise the current state of research in this field and demonstrate that the gyrotrons Based on both the current and planned novel techniques and methods, they are promising radiation sources for THz sensing and imaging. We anticipate a continuation of progress in this field, taking into account the active research on gyrotron growth worldwide, the accumulated experience and expertise. It is believed that this will not only lead to the proliferation of current applications that rely on gyrotrons as sources of radiation, but will also encourage the development of novel techniques, methods and devices that are still unknown. Definitely, there would be those among them who are Imaging, sensing, quality control, etc.-related The ultimate purpose of the present review paper was to inform the researchers working on these critical applications as sufficient radiation sources of the gyrotrons’ capabilities. We hope that in their work, such an outline will be beneficial.

Author (s) Details

Toshitaka Idehara
University of Fukui, Research Center for Development of Far-Infrared Region, Fukui 910-8507, Japan and Gyro Tech Ltd. Co., Fukui 910-8507, Japan.

Svilen Petrov Sabchevski
University of Fukui, Research Center for Development of Far-Infrared Region, Fukui 910-8507, Japan and Institute of Electronics of the Bulgarian Academy of Science, Sofia, 1784, Bulgaria.

Mikhail Glyavin
Institute of Applied Physics, Russian Academy of Sciences, N. Novgorod, 603950, Russia.

Seitaro Mitsudo
University of Fukui, Research Center for Development of Far-Infrared Region, Fukui 910-8507, Japan.

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