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High performance red-emitting multiple layer InGaN/GaN quantum dot lasers

机译:高性能发红光多层InGaN / GaN量子点激光器

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摘要

InGaN/GaN self-organized quantum dots can provide useful advantages over quantum wells for the realization of long-wavelength visible light sources because the dots are formed by strain relaxation. A III-nitride based laser emitting in the red (lambda similar to 630 nm), which has not been demonstrated with quantum wells, would be useful for a host of applications. We have investigated the epitaxy and characteristics of self-organized InGaN/GaN multiple layer quantum dots grown by plasma-assisted molecular beam epitaxy and have optimized their properties by tuning the growth parameters. Red-emitting (lambda similar to 630 nm) quantum dots have radiative lifetime similar to 2.5 ns and internal quantum efficiency greater than 50%. Edge-emitting red-lasers with multi-dot layers in the active region exhibit an extremely low threshold current density of 1.6 kA/cm(2), a high temperature coefficient T-0 = 240 K, and a large differential gain dg/dn = 9 x 10(-17) cm(2). (C) 2016 The Japan Society of Applied Physics
机译:InGaN / GaN自组织量子点可提供优于量子阱的有用优势,因为该点是通过应变松弛形成的,因此可以实现长波长可见光源。尚未通过量子阱证明的,以红色(λ波长类似于630 nm)发射的,基于III族氮化物的激光将对许多应用有用。我们研究了通过等离子体辅助分子束外延生长的自组织InGaN / GaN多层量子点的外延和特性,并通过调整生长参数优化了其性能。发出红色光(λ类似于630 nm)的量子点的辐射寿命接近2.5 ns,内部量子效率大于50%。有源区域中具有多点层的边缘发射红激光显示极低的阈值电流密度,为1.6 kA / cm(2),高温系数T-0 = 240 K和大差分增益dg / dn = 9 x 10(-17)厘米(2)。 (C)2016年日本应用物理学会

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  • 来源
    《Japanese journal of applied physics》 |2016年第3期|032101.1-032101.4|共4页
  • 作者单位

    Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA;

    Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA;

    Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA;

    Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA;

    Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA;

    Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA;

    Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA;

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