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首页> 外文期刊>Inorganic materials >Conversion of Short-Wavelength Electromagnetic Radiation in SiO_2 Opal Photonic Crystals
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Conversion of Short-Wavelength Electromagnetic Radiation in SiO_2 Opal Photonic Crystals

机译：SiO_2蛋白石光子晶体中短波电磁辐射的转换

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摘要

Reflection spectra of the (111) growth surface of opal photonic crystals differing in silica sphere diameter have been measured under illumination with narrowband ultraviolet and violet light from a laser and light-emitting diodes and with broadband light from a halogen lamp. We have found narrow strong bands differing in spectral position from the light from the short-wavelength excitation sources. The spectral position of these bands corresponds to that of photonic band gaps and is independent of excitation wavelength. The silica sphere diameter has no effect on the shape of the reflection band, and its position always correlates with that of the band gap of the opal. The present results demonstrate that exposure of a photonic crystal to short-wavelength radiation leads to conversion of the radiation to the spectral range of the band gap. The microscopic mechanism of the conversion process may involve three-photon parametric processes and amplification of the broadband photoluminescence due to structural defects in the silica matrix. Our results open up the possibility of creating new types of optically pumped solid gain media based on opal photonic crystals.
机译：二氧化硅球直径不同的蛋白石光子晶体的（111）生长表面的反射光谱已在激光和发光二极管的窄带紫外和紫光以及卤素灯的宽带光照射下进行了测量。我们发现窄的强带在光谱位置上与短波长激发源的光不同。这些带的光谱位置对应于光子带隙的光谱位置，并且与激发波长无关。二氧化硅球直径对反射带的形状没有影响，并且其位置始终与蛋白石的带隙位置相关。本结果证明，光子晶体暴露于短波长辐射导致辐射转换为带隙的光谱范围。转换过程的微观机制可能涉及三光子参量过程，以及由于二氧化硅基质中的结构缺陷而导致的宽带光致发​​光放大。我们的结果为基于蛋白石光子晶体创建新型的光泵浦固体增益介质提供了可能性。

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  • 来源
    《Inorganic materials》 |2014年第10期|1003-1006|共4页
  • 作者

    V. S. Gorelik; L. S. Lepnev; A. O. Litvinova;

  • 作者单位

    Lebedev Institute of Physics, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia;

    Lebedev Institute of Physics, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia;

    Lebedev Institute of Physics, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991 Russia;

  • 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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