This paper describes the design and application of a scanning near-fie
ld optical/atomic force microscope (SNOAM). A sharpened and bent optic
al fiber was used as a near-field optical probe as well as an atomic f
orce microscope probe in a vertical vibrating mode. SNOAM provides sim
ultaneous topographical and optical images with a resolution better th
an 100 nm. The SNOAM observation modes such as transmission, reflectio
n, fluorescence and in liquids were presented and demonstrated with hi
gh resolution. As an example of application to optical processing, we
produced pit pattern, down to similar to 200 nm in diameter exposed an
d developed in commercial photoresist film.