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Electrically driven nanobeam laser

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??m3 (~8.2(??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??A 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. Lasers for on-chip optical technologies should be as small as possible. Here, Jeong et al. achieve room-temperature lasing in an electrically driven nanobeam photonic structure using only 11 holes to confine the light.

SUBMITTER: Jeong K

PROVIDER: S-EPMC3868207 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature

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