Fluorescence and polarization spectroscopy of single silicon vacancy centers in heteroepitaxial nanodiamonds on iridium
Fluorescence and polarization spectroscopy of single silicon vacancy centers in heteroepitaxial nanodiamonds on iridium
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DOI：
10.1103/physrevb.84.205211
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发表时间：
2011-08
影响因子：
3.7
通讯作者：
E. Neu;M. Fischer;S. Gsell;M. Schreck;C. Becher
中科院分区：
文献类型：
--
作者：
E. Neu;M. Fischer;S. Gsell;M. Schreck;C. Becher
介绍了一种用于金刚石中单硅空位(SIV)色心产生和光谱的先进材料系统。我们采用微波等离子体化学气相沉积的方法合成了约为2.5kW的异质外延纳米金刚石。横向尺寸为160 nm，厚度约为75 nm。这些定向的“纳米岛”将亚波长尺寸纳米钻石的增强荧光提取与明确的晶体取向结合在一起。所研究的SIV中心在730-750 nm的波长范围内显示出窄至0.7 nm的零声子线。我们详细研究了单个SIV中心的声子耦合和振动边带，发现了显著的非均匀效应。偏振测量揭示了线偏振光的偏振发光和择优吸收。
We introduce an advanced material system for the production and spectroscopy of single silicon vacancy (SiV) color centers in diamond. We use microwave plasma chemical vapor deposition to synthesize heteroepitaxial nanodiamonds of approx. 160 nm in lateral size with a thickness of approx. 75 nm. These oriented 'nanoislands' combine the enhanced fluorescence extraction from subwavelength sized nanodiamonds with defined crystal orientation. The investigated SiV centers display narrow zero-phonon-lines down to 0.7 nm in the wavelength range 730-750 nm. We investigate in detail the phonon-coupling and vibronic sidebands of single SiV centers, revealing significant inhomogeneous effects. Polarization measurements reveal polarized luminescence and preferential absorption of linearly polarized light.