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Photoluminescence from silicon dioxide photonic crystal cavities with embedded silicon nanocrystals

机译:具有嵌入的硅纳米晶体的二氧化硅光子晶体腔的光致发光

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摘要

One-dimensional nanobeam photonic crystal cavities are fabricated in silicon dioxide with silicon nanocrystals. Quality factors of over 9 × 10~3 are found in experiment, matching theoretical predictions, with mode volumes of 1.5(λ)~3. Photoluminescence from the cavity modes is observed in the visible wavelength range 600-820 nm. Studies of the lossy characteristics of the cavities are conducted at varying temperatures and pump powers. Free carrier absorption effects are found to be significant at pump powers as low as a few hundred nanowatts.
机译:一维纳米束光子晶体腔是在具有硅纳米晶的二氧化硅中制造的。实验发现质量因子超过9×10〜3,与理论预测相符,模量为1.5(λ/ n)〜3。在600-820 nm的可见光波长范围内观察到了来自腔模的光致发光。在变化的温度和泵浦功率下对腔体的损耗特性进行研究。发现在低至几百纳瓦的泵浦功率下,自由载流子吸收效应非常重要。

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