Doubly enhanced spontaneous emission due to increased photon density of states at photonic band edge frequencies.
Doubly enhanced spontaneous emission due to increased photon density of states at photonic band edge frequencies.
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DOI：
10.1364/oe.17.013168
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发表时间：
2009-07
期刊：
影响因子：
3.8
通讯作者：
K. Kuroda;T. Sawada;T. Kuroda;Kenji Watanabe;K. Sakoda
中科院分区：
文献类型：
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作者：
K. Kuroda;T. Sawada;T. Kuroda;Kenji Watanabe;K. Sakoda
对于由 Ta2O5 和 SiO2 组成且具有氧空位作为发光体的介电多层膜的角分辨光致发光实验，清楚地证明了由于发射频率下的光子态密度增加和激发频率下的小群速度而导致的自发发射的双重增强。弱调制近似给出的理论发射曲线与实验观察结果非常吻合。
Double enhancement of spontaneous emission due to increased photon density of states at the emission frequency and the small group velocity of light at the excitation frequency was clearly demonstrated by angle-resolved photoluminescence experiments for dielectric multilayers composed of Ta2O5 and SiO2 with oxygen vacancies as light emitters. Theoretical emission profiles given by the weak modulation approximation agreed well with the experimental observations.