Electrically driven nanobeam laser

Kwang-Yong Jeong, You-Shin No, Yongsop Hwang, Ki Soo Kim, Min-Kyo Seo, Hong-Gyu Park () and Yong-Hee Lee ()
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Kwang-Yong Jeong: KAIST
You-Shin No: Korea University
Yongsop Hwang: Korea University
Ki Soo Kim: Convergence and Components & Materials Research Laboratory, Electronics and Telecommunications Research Institute
Min-Kyo Seo: KAIST
Hong-Gyu Park: Korea University
Yong-Hee Lee: KAIST

Nature Communications, 2013, vol. 4, issue 1, 1-6

Abstract: Abstract 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 μm3 (~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.

Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3822

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DOI: 10.1038/ncomms3822

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