tera·​hertz | \ ˈter-ə-ˌhərts How to pronounce terahertz (audio) , -ˌherts \
plural terahertz

Definition of terahertz

: a unit of frequency equal to one trillion hertz Visible light occupies the neighborhood of 300 terahertz, which is 300 x 1012 cycles per second.— Dave Doody Terahertz waves also occupy a unique window of the electromagnetic spectrum where a large number of molecules emit and absorb radiation.— Michael C. Wanke et al.

Examples of terahertz in a Sentence

Recent Examples on the Web The tunneling transistor’s high sensitivity very quickly and effectively identifies a terahertz signal. Gary Fowler, Forbes, 17 Mar. 2021 What’s more, Hu says, the same strategy should enable the team to eventually make room temperature terahertz lasers. Robert F. Service, Science | AAAS, 2 Nov. 2020 But compact terahertz lasers have only worked at ultralow temperatures, limiting them mostly to laboratory settings. Robert F. Service, Science | AAAS, 2 Nov. 2020 Those photons were infrared in the first QCL, but in 2002 researchers in Italy and the United Kingdom created QCL lasers that emitted terahertz photons. Robert F. Service, Science | AAAS, 2 Nov. 2020 Optical clocks operate at 100s of terahertz – more than 100 trillion cycles per second – and can now provide 16 digits of precision in one second or better. Andrew Ludlow, The Conversation, 22 May 2020 But optical interferometry is far trickier: The short wavelengths of visible light, running at terahertz frequencies, cannot yet be digitized by any electrical system. Adam Mann, Science | AAAS, 3 July 2018 To make the jump to a many-terahertz microprocessor — that is, trillions of operations per second — some scientists are now considering augmenting electronics with optics. Mark K. Anderson, WIRED, 16 Nov. 2001

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'terahertz.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of terahertz

1964, in the meaning defined above

History and Etymology for terahertz

tera- + hertz

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The first known use of terahertz was in 1964

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Cite this Entry

“Terahertz.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/terahertz. Accessed 30 Jul. 2021.

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