pho·​to·​de·​tec·​tor | \ˌfō-tō-di-ˈtek-tər \

Definition of photodetector 

: any of various devices for detecting and measuring the intensity of radiant energy through photoelectric action

Examples of photodetector in a Sentence

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And IceCube is proposing to expand the volume of ice strung with photodetectors, increasing its sensitivity to the rare cases where neutrinos bump into the Antarctic ice. John Timmer, Ars Technica, "Supermassive black hole shot a neutrino straight at Earth," 12 July 2018 The photon that bounced off the object can then be registered using a photodetector. Chris Lee, Ars Technica, "Imaging at 1,000fps with a single pixel," 15 Feb. 2018 If the bacteria start glowing, the photodetectors that sit just below the bacteria’s compartment are activated. Beth Mole, Ars Technica, "This capsule of glowing E. coli will probe your gut for signs of trouble," 25 May 2018 Beneath each well is a tiny electronic photodetector that can register light from the bacteria. Karen Kaplan,, "This futuristic pill senses signs of disease inside the body, then sends a wireless alert to a phone," 25 May 2018 If the molecules of choice filter in and meet the bacteria, the bacterial cells produce light that is picked up by photodetectors embedded in a small electrical chip. Andrew Joseph, STAT, "Swallow this: A sensor could monitor gut health via engineered bacteria — and beam results to a smartphone," 24 May 2018 If those two light beams are shone together on a photodetector, the result depends on whether the pulses overlap in time. Chris Lee, Ars Technica, "Lidar system images bullet in flight," 30 Mar. 2018 In one path, the mode is directly detected by a photodetector. Chris Lee, Ars Technica, "Imaging at 1,000fps with a single pixel," 15 Feb. 2018 Better still, the same material can act as a photodetector, providing a way of building all the needed hardware using a single process. John Timmer, Ars Technica, "Researchers craft an LED just two atoms thick," 17 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photodetector.' 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 photodetector

1947, in the meaning defined above

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Last Updated

19 Nov 2018

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The first known use of photodetector was in 1947

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