Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1996-06-24
1998-02-03
Turner, Samuel A.
Optics: measuring and testing
By particle light scattering
With photocell detection
356357, G01B 902
Patent
active
057150540
ABSTRACT:
In a scanning probe microscope for the atomic resolution of the surface structure of an object wherein a detector probe is supported on a sensor head by a probe holder so as to be movable relative to the surface of an object to be scanned, the sensor head includes a first light conductor with an end face disposed opposite the detector probe and a second light conductor having an end face disposed opposite the object surface and an interferometer is connected to each light conductor for determining the distance between the first light conductor and the detector probe and, respectively, between the second light conductor and the object surface and an indicating instrument is provided which indicates the combined signal in such a way that the structure of said object surface is given independently of changes in distance between the sensor head and the object.
REFERENCES:
patent: 5206702 (1993-04-01), Kato et al.
patent: 5227857 (1993-07-01), Kersey
"Surace Profilometer With Ultra-High Resolution", IBM Technical Discloaure Bulletin, vol. 35, No. 3, Aug., 1992.
M.J. Offside, et al., "Interferometric Scanning Optical Microscope For Surface Characterization", Applied Optics, vol. 31, No. 31, Nov., 1992.
M. Nonnenmacher, "Force Microscopy With Actively Stabilized Differential Fiber Detection Mechanism", Journal of Vacuum Science & Technology, Jul./Aug. 1993, No. 4, Part 1.
Fuss Hans-Achim
Saurenbach Frank
Bach Klaus J.
Forschungzentrum Julich GmbH
Turner Samuel A.
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