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Enhancement of vertical emission in photonic crystal nanolasers

机译：光子晶体纳米激光器中垂直发射的增强

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摘要

Photonic crystal nanolasers have a drawback of weak vertical emission, which degrades the detection efficiency from above. We show that the vertical emission is enhanced greatly by introducing asymmetry to the cavity, so that Fourier components around the Brillouin zone boundary are shifted to the zone center. When the light output is collected from above by an objective lens with a numerical aperture of 0.42, the efficiency for the optimized" devices, with and without nanoslot, are calculated to be 26 and 153 times that of the original structure. We confirm the experimental and calculated results to be in good agreement.
机译：光子晶体纳米激光器具有垂直发射弱的缺点，这从上方降低了检测效率。我们表明，通过向腔中引入不对称性，垂直发射得到了极大的增强，因此布里渊区边界周围的傅立叶分量被移到了区中心。当通过一个数值孔径为0.42的物镜从上方收集光输出时，经过优化的带有和不带有纳米缝隙的“器件”的效率被计算为原始结构的26倍和153倍。我们确认了实验结果与计算结果相吻合。

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  • 来源
    《Applied Physics Letters 》 |2012年第12期| p.121117.1-121117.3| 共3页
  • 作者

    Michimasa Narimatsu; Shota Kita; Hiroshi Abe; Toshihiko Baba;

  • 作者单位

    Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai,Hodogayaku, Yokohama 240-8501, Japan Core Research for Evolutional Science and Technology,Japan Science and Technology Agency, 5, Sanbancho, Chiyodaku, Tokyo 102-0075, Japan;

    Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai,Hodogayaku, Yokohama 240-8501, Japan Core Research for Evolutional Science and Technology,Japan Science and Technology Agency, 5, Sanbancho, Chiyodaku, Tokyo 102-0075, Japan;

    Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai,Hodogayaku, Yokohama 240-8501, Japan Core Research for Evolutional Science and Technology,Japan Science and Technology Agency, 5, Sanbancho, Chiyodaku, Tokyo 102-0075, Japan;

    Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai,Hodogayaku, Yokohama 240-8501, Japan Core Research for Evolutional Science and Technology,Japan Science and Technology Agency, 5, Sanbancho, Chiyodaku, Tokyo 102-0075, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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