首页> 外国专利> A method for obtaining absorption spectra from near-field infrared light scattering using homodyne detection.

A method for obtaining absorption spectra from near-field infrared light scattering using homodyne detection.

机译:一种使用零差检测从近场红外光散射获得吸收光谱的方法。

摘要

The present disclosure provides a procedure and an apparatus to obtain the absorption profiles of molecular resonance with ANSOM. The method includes setting a reference field phase to φ=0.5π relative to the near-field field, and reference amplitude A≧5|αeff|. The requirement on phase precision is found to be 0.3π. The apparatus includes a phase stabilization mechanism in addition to the ANSOM to maintain high phase precision homodyne phase condition of less than 0.1 rad. This method enables ANSOM performing vibrational spectroscopy at nanoscale spatial resolution.
机译:本公开提供了获得ANSOM的分子共振的吸收分布的方法和设备。该方法包括将参考场相位设置为相对于近场场为φ=0.5π,并且参考幅度A≥5|αeff|。发现对相位精度的要求为<0.3π。该装置除ANSOM外还包括一个相位稳定机构,以保持小于0.1 rad的高相位精度零差相位条件。这种方法使ANSOM能够以纳米级的空间分辨率执行振动光谱分析。

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