How Laser Communication Works

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Author's Note: How Laser Communication Works

Laser communications are another great example of how we're living in the future, but I'll always associate the concept with an episode from the past. During the Cold War, Léon Theremin -- inventor of video interlacing as well as the namesake electric instrument heard in scores of science fiction films -- developed a light-based listening device capable of remotely bugging an office (it was actually a low-power infrared beam, not a laser). It worked by detecting the vibrations on a pane of glass caused by the sound pressure generated by voices within the target room. The Soviets used this device, the ancestor of modern laser microphones, to eavesdrop on various embassies in Moscow.

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  • Duarte, F. J. "Secure Interferometric Communications in Free Space." Optics Communications. Vol. 205, no. 4. Page 313. May 2002.
  • Duarte, F. J. et al. "N-slit interferometer for Secure Free-Space Optical Communications: 527 m Intra Interferometric Path Length." Journal of Optics. Vol. 13, no. 3. Feb. 3, 2011.
  • Grant, Andrew. "Quantum Cryptography Takes Flight." Science News. April 1, 2013. (Nov. 15, 2013)
  • Hadhazy, Adam. "How It Works: NASA's Experimental Laser Communication System." Popular Mechanics. Sept. 6, 2011. (Nov. 15, 2013)
  • Institute of Physics. "Case Study: Lasers." (Nov. 15, 2013)
  • Jones, Stacy V. "PATENTS; Lasers from Satellites a Link to Submarines." The New York Times. July 18, 1981. (Nov. 15, 2013)
  • Lydersen, Lars. "Hacking Commercial Quantum Cryptography Systems by Tailored Bright Illumination." Nature Photonics. Vol. 4. Page 686. 2010.
  • Markoff, John. "A Chip That Can Transfer Data Using Laser Light." The New York Times. Sept. 18, 2006. (Nov. 15, 2013)
  • MIT News. "3Q: Don Boroson on NASA's Record-Breaking Use of Laser Communications." Oct. 28, 2013. (Nov. 15, 2013)
  • NASA. "LLCD Space Terminal." (Nov. 15, 2013)
  • NASA. "ASA Laser Communication System Sets Record with Data Transmissions to and from Moon." Oct. 22, 2013. (Nov. 15, 2013)
  • National Geographic. "The Big Idea: How Breakthroughs of the Past Shape the Future." National Geographic. Sept. 6, 2011.
  • Science News Letter. "Laser Communications System Developed." Jan. 25, 1964.
  • Strasburg, Jenny. "On Your Mark, Get Set..." Wall Street Journal. Oct. 10, 2011. (Nov. 15, 2013)
  • Thomsen, D. E. "A Pure Laser for Clean Communications." Science News. April 23, 1983.
  • Waks, Edo, et al. "Secure Communication: Quantum Cryptography with a Photon Turnstile." Nature. Vol. 420. Dec. 19, 2002.

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