Method and apparatus for near-field, scanning, optical microscop

Details Method and apparatus for near-field, scanning, optical microscop Method and apparatus for near-field, scanning, optical microscop

1993-07-29

1995-02-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250306, H01J 314

Patent

active

053897790

ABSTRACT:
Apparatus and methods of near-field scanning optical microscopy (NSOM) are described. A sensing technique is used, in which a light source having an optical cavity is reflectively coupled to the sample surface. Changes in the surface properties of the sample at the sensed location alter the optical feedback in the light source. This leads to detectable changes in the output characteristics of the light source.

REFERENCES:
patent: 4604520 (1986-08-01), Pohl
patent: 5272330 (1993-12-01), Betzig et al.

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