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Toward Bloch Surface Wave-Assisted Spectroscopy in the Mid-Infrared Region
ACS Photonics ( IF 6.5 ) Pub Date : 2018-02-07 00:00:00 , DOI: 10.1021/acsphotonics.7b01315 Grégoire M. Smolik 1 , Nicolas Descharmes 1 , Hans Peter Herzig 1
ACS Photonics ( IF 6.5 ) Pub Date : 2018-02-07 00:00:00 , DOI: 10.1021/acsphotonics.7b01315 Grégoire M. Smolik 1 , Nicolas Descharmes 1 , Hans Peter Herzig 1
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We present the first observation of Bloch surface waves in the mid-infrared spectral range. Bloch surface waves are electromagnetic states that can propagate at the interface between a continuous dielectric medium and a periodic stack of materials. We designed a mid-infrared multilayer optical element specifically for this purpose. The structure is made of successive layers of ZnSe and YbF3 deposited on a CaF2 substrate. Surface waves can be coupled into this structure from 6.6 to 10.6 μm. We characterized the optical properties of the fabricated element using a tunable quantum cascade laser centered around 7.85 μm. We believe that Bloch surface wave based platforms are very promising components for surface sensing and spectroscopic applications in the mid-infrared.
中文翻译：
迈向中红外区域的Bloch表面波辅助光谱
我们提出中红外光谱范围内Bloch表面波的首次观察。毛坯表面波是电磁状态，可以在连续介电介质和材料的周期性堆叠之间的界面处传播。为此，我们专门设计了中红外多层光学元件。该结构由沉积在CaF 2衬底上的ZnSe和YbF 3的连续层组成。表面波可以从6.6到10.6μm耦合到该结构中。我们使用以7.85μm为中心的可调量子级联激光器表征了制造元件的光学特性。我们认为，基于Bloch表面波的平台是中红外表面传感和光谱应用中非常有前途的组件。
更新日期：2018-02-07
中文翻译：
迈向中红外区域的Bloch表面波辅助光谱
我们提出中红外光谱范围内Bloch表面波的首次观察。毛坯表面波是电磁状态，可以在连续介电介质和材料的周期性堆叠之间的界面处传播。为此，我们专门设计了中红外多层光学元件。该结构由沉积在CaF 2衬底上的ZnSe和YbF 3的连续层组成。表面波可以从6.6到10.6μm耦合到该结构中。我们使用以7.85μm为中心的可调量子级联激光器表征了制造元件的光学特性。我们认为，基于Bloch表面波的平台是中红外表面传感和光谱应用中非常有前途的组件。
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