Electrically driven nanobeam laser

Kwang Yong Jeong, You Shin No, Yongsop Hwang, Ki Soo Kim, Min Kyo Seo, Hong Gyu Park, Yong Hee Lee

Research output: Contribution to journalArticlepeer-review

94 Citations (Scopus)


The realization of lasers as small as possible has been one of the long-standing goals of the laser physics and quantum optics communities. Among multitudes of recent small cavities, the one-dimensional nanobeam cavity has been actively investigated as one of the most attractive candidates for effective photon confinement thanks to its simple geometry. However, the current injection into the ultra-small nano-resonator without critically degrading the quality factor remains still unanswered. Here we report an electrically driven, one-dimensional, photonic-well, single-mode, room-temperature nanobeam laser whose footprint approaches the smallest possible value. The small physical volume of ∼4.6 × 0.61 × 0.28 μm 3 (∼8.2(λ n -1)3) was realized through the introduction of a Gaussian-like photonic well made of only 11 air holes. In addition, a low threshold current of ∼5 μA was observed from a three-cell nanobeam cavity at room temperature. The simple one-dimensional waveguide nature of the nanobeam enables straightforward integration with other photonic applications such as photonic integrated circuits and quantum information devices.copyright

Original languageEnglish
Article number2822
JournalNature communications
Publication statusPublished - 2013

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)


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