The Potential of the Gyrotrons for Bridging the THz Power Gap

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Author: IDEHARA, Tほか

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Publication date: 2008-09

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Note (General)：: Coherent sources of radiation in the spectral region between the microwaves and the optical waves are necessary for an increasing number of applicatio...

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Material Type: 文書・図像類
Title: The Potential of the Gyrotrons for Bridging the THz Power Gap
Author/Editor: IDEHARA, T
SAITO, T
OGAWA, I
MITSUDO, S
TATEMATSU, Y
SABCHEVSKI, S
Author Heading: IDEHARA, T
SAITO, T
OGAWA, I
MITSUDO, S
TATEMATSU, Y
SABCHEVSKI, S
Publication Date: 2008-09
Publication Date (W3CDTF): 2008-09
Periodical title: 遠赤外領域開発研究
No. or year of volume/issue: 9
Volume: 9
Pages: 39-62
Text Language Code: eng
Subject Heading: sources of coherent radiation
gyrotrons
sub-terahertz
terahertz
T-waves
T-gap
terahertz technologies
Target Audience: 一般
Note (General): Coherent sources of radiation in the spectral region between the microwaves and the optical waves are necessary for an increasing number of applications in the fundamental research and in the technologies. Many classical electronic and photonic devices as well as some recently developed terahertz emitters can generate in this actively developed spectral range but are limited to low output powers. The most powerful devices that have the potential to bridge the power gap (THz-gap) in the electromagnetic spectrum are the gyrotrons,also known as Electron Cyclotron Resonance Masers (ECRM). They are characterized by many advantageous features,e.g. step-like broadband and continuous narrow-band tunability,possibility to modulate the amplitude and the frequency of the radiation,high mode purity,short-,long-pulse and CW stable operation etc. In this FIR Center Report we review briefly the state-of-the-art of the gyrotrons,discuss the recent advancements in the development of high frequency gyrotrons generating coherent radiation in the sub-terahertz and the terahertz regions of the electromagnetic spectrum and compare them with other devices. We shortly summarize the known applications of such sources and review their potential for usage in novel fields taking into account their advantages but also the known physical and technical limitations. We also provide illustrative examples using the results of the theoretical and experimental investigations carried out at the Research Center for Development of Far-Infrared Region using the developed there millimeter and submillimeter wave gyrotrons.
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ