Mid-infrared germanium photonic crystal cavity.
Mid-infrared germanium photonic crystal cavity.
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DOI：
10.1364/ol.42.002882
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发表时间：
2017-08
期刊：
影响因子：
3.6
通讯作者：
Tinghui Xiao;Ziqiang Zhao;Wen Zhou;M. Takenaka;H. Tsang;Zhenzhou Cheng;K. Goda
中科院分区：
文献类型：
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作者：
Tinghui Xiao;Ziqiang Zhao;Wen Zhou;M. Takenaka;H. Tsang;Zhenzhou Cheng;K. Goda
中红外（MIR）光谱范围具有光谱和传感应用的巨大潜力，因为它包含揭示分子振动和旋转特征的指纹区域。CMOS兼容的片上器件可以在整个指纹区域实现强烈的光-物质相互作用，被认为是此类应用的一种有前途的方式，但仍然是前所未有的。在这里，我们提出了一个片上MIR锗光子晶体腔，覆盖整个指纹区域。这是通过利用自制的空气包层锗平台实现的。我们的MIR器件为指纹区域的集成非线性光学和片上生化传感开辟了新的途径。
The mid-infrared (MIR) spectral range holds significant potential for spectroscopic and sensing applications because it encompasses the fingerprint region that unveils the vibrational and rotational signatures of molecules. CMOS-compatible on-chip devices that can achieve strong light-matter interaction in the entire fingerprint region are considered a promising way for such applications, but remain unprecedented. Here we present an on-chip MIR germanium photonic crystal cavity that covers the entire fingerprint region. This is made possible by harnessing a homemade air-cladding germanium platform. Our MIR device creates a new avenue toward integrated nonlinear optics and on-chip biochemical sensing in the fingerprint region.