英國倫敦大學學院、劍橋大學和利茲大學共同加入了一個650萬英鎊的研究項目--相干太赫茲系統（Coherent Terahertz Systems，簡稱COTS）項目，以破解所謂的“未被充分利用的電磁頻譜太赫茲波段”。COTS項目由工程和物理科學研究委員會（EPSRC）資助。

據研究人員介紹，太赫茲波段的可用帶寬比整個分配無線電頻譜要寬30倍。研究人員預計10年之內太赫茲將會廣泛應用，包括用于室內“超級Wi-Fi”的超寬帶無線技術，以及用于生產控制、安保和醫療的THZ傳感和成像系統。

倫敦大學學院電子與電氣工程學院的負責人兼首席研究員Alwyn Seeds教授表示，該研究項目將使太赫茲波段最終全面發揮它的科學和商業潛能。

目前，太赫茲技術被認為是復雜且需求量大的一種技術。COTS項目將匯集太赫茲量子級聯激光器、微波光子學以及太赫茲量子態控制的先驅團隊，旨在通過利用實現相干技術的光子學展開太赫茲頻譜在科學和商業方面的廣泛應用。

原文參考：

£6.5million project to ‘unlock’ the terahertz spectrum

University College London, Cambridge and Leeds Universities are joining together in a £6.5million research project to unlock what they call the 'underused and unchartered terahertz (THz) region of the electromagnetic spectrum'.The COTS – Coherent Terahertz Systems – Project is funded by the Engineering and Physical Sciences Research Council (EPSRC).

According to the researchers, there is 30 times more bandwidth available in the THz region than in the entire allocated radio spectrum. Within 10 years, researchers anticipate widespread THz applications, including ultra broadband wireless technology for indoor 'super Wi-Fi' to THz sensing and imaging systems in the production control, security and medical sectors.

Principal investigator Professor Alwyn Seeds, head of the Department of Electronic and Electrical Engineering at UCL, said: "This programme will enable us to address the THz spectrum with the same precision and sensitivity as is today possible at radio frequencies, leading to this underused part of the electromagnetic spectrum finally achieving its full scientific and commercial potential."

Current THz technologies are said to be complex, bulky and power hungry. The COTS programme will bring together teams that have pioneered THz quantum cascade lasers, microwave photonics and THz quantum state control with the objective of opening up the THz spectrum for widespread scientific and commercial application through the use of photonics enabled coherent techniques.

來源：newelectronics
作者：Graham Pitcher

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