6533b86efe1ef96bd12cbc56
RESEARCH PRODUCT
Recent Experimental Results with the PSTM: - Observation of a Step on a Quartz Surface. - Spatial Spectroscopy of Microwaveguides
J. P. GoudonnetPierre-michel AdamF. De FornelL. SalomonG. ChabrierEric Bourillotsubject
Total internal reflectionOptical fiberMaterials sciencePhotonOrientation (computer vision)business.industrylaw.inventionOpticslawScanning tunneling microscopeSpectroscopybusinessRefractive indexBeam (structure)description
The Photon Scanning Tunneling Microscope (PSTM) is based on the frustration of the total internal reflected beam by the end of an optical fiber. Till today it has been used to obtain topographic information generally for smooth samples. In this paper we report two different kinds of experimental results. First, when the sample is in the form of a step, our measurements demonstrate how the images, obtained in the constant intensity mode, depend on the orientation of the incident beam of light with respect to the step. Next, we show that the first derivative of the collected intensity with respect to the probe-sample distance at each point of the sample yields to a new kind of image named hereafter “spatial spectroscopic image”. With this spectroscopy the distribution of the refractive index variation of the sample can be found out. Images of microwaveguides in topographic mode as well as in spectroscopic mode are presented and discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-01-01 |