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Giant multiphoton absorption in silicon

With the availability of high-intensity terahertz free-electron lasers, surprisingly large multiphoton absorptions in a phosphorus atom doped in a silicon crystal have been obtained, providing the possibility of a hydrogen-like system in silicon photonics and quantum information devices.

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    Goeppert-Mayer, M. Ann. Phys. 9, 273–295 (1931).

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    van Loon, M. A. W. et al. Nat. Photon. (2018).

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Author information


  1. Department of Physics and Electronics, Osaka Prefecture University, Naka-ku, Sakai, Osaka, Japan

    • Nobuhiko Yokoshi
    •  & Hajime Ishihara
  2. Department of Materials Engineering Science, Osaka University, Toyonaka, Osaka, Japan

    • Hajime Ishihara


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Corresponding authors

Correspondence to Nobuhiko Yokoshi or Hajime Ishihara.