Electrically driven nanobeam laser

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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 similar to 4.6 x 0.61 x 0.28 mu m(3) (similar to 8.2(lambda 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 similar to 5 mu 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.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2013-11
Language
English
Article Type
Article
Keywords

2-DIMENSIONAL PHOTONIC CRYSTAL; NANOCAVITY LASER; GAP; FABRICATION; DESIGN; CAVITY; SCALE

Citation

NATURE COMMUNICATIONS, v.4

ISSN
2041-1723
DOI
10.1038/ncomms3822
URI
http://hdl.handle.net/10203/188614
Appears in Collection
PH-Journal Papers(저널논문)
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