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Highly sensitive mode mapping of whispering-gallery modes by scanning thermocouple-probe microscopy

机译:通过扫描热电偶探针显微镜对耳语画廊模式进行高灵敏的模式映射

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摘要

We propose a method for mapping optical near-fields with the help of a thermocouple scanning-probe microscope tip. As the tip scans the sample surface, its apex is heated by light absorption, generating a thermovoltage. The thermovoltage map represents the intensity distribution of light at the sample surface. The measurement technique has been employed to map optical whispering-gallery modes in fused silica microdisk resonators operating at near-infrared wavelengths. The method could potentially be employed for near-field imaging of a variety of systems in the near-infrared and visible spectral range.
机译:我们提出了一种借助热电偶扫描探针显微镜尖端绘制光学近场的方法。当尖端扫描样品表面时,其顶点被光吸收加热,从而产生热电压。热电压图表示样品表面光的强度分布。该测量技术已被用于绘制在近红外波长下工作的熔融石英微盘谐振器中的光学耳语画廊模式。该方法可以潜在地用于在近红外和可见光谱范围内的各种系统的近场成像。

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