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.
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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