全金属三维光子晶体具有很大的红外带间隙
J G Fleming1, S Y Lin, I El-Kady
1MS 0603, Sandia National Laboratories, PO Box 5800, Albuquerque, New Mexico 87185, USA.
Nature
|May 3, 2002
概括
研究人员开发了一个3D光子晶体,具有很大的红外带间隙. 这种金属光子晶体表现出强烈的衰减和独特的光学特性,适用于先进的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 光学和光子学 在光学和光子学.
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 三维 (3D) 金属晶体为大型光子带隙和新型电磁现象提供了潜力,适用于高温应用.
- 在红外和可见光谱中研究金属光子晶体是具有挑战性的,因为金属的分散和吸收,限制研究微波波长.
- 制造3D金属晶体仍然是一个障碍,尽管自组装技术显示出希望.
研究的目的:
- 报告测量和模拟3D晶体的光子带隙特性.
- 探索3D金属光子晶体在红外应用中的潜力.
- 为了研究独特的光学特性和热光伏和黑体辐射的潜在应用.
主要方法:
- 制造一个3D晶体结构.
- 使用红外光谱学进行光学表征.
- 计算模拟来分析光子带隙特性.
主要成果:
- 一个3D晶体在红外光谱 (820微米) 中表现出很大的光子带隙.
- 强烈的衰减 (大约. 30 dB/单元细胞在12微米) 在带隙内观察到.
- 在波段边缘发现了急剧的吸收峰值和6微米以下的显著传输.
结论:
- 三维金属光子晶体,特别是,在红外应用方面具有显著的潜力.
- 观察到的特性使光子传输现象的整合成为可能.
- 潜在的应用包括热光伏和定制黑体排放.
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