Patent ID: 6713743
Filing Date: 2004-03-30
Classification: B82Y,G01Q,Y10S

Abstract:
A Fabry-Perot resonator using an optical fiber having an end of a concave mirror shape, comprising:a cantilever having an upper side of a reflective surface and having a lower side with a tip for touching a sample, for moving in a Z-axis direction along with a head body by interlocking a piezoelectric element fixed at a column of an atomic force microscope; an optical fiber having one end connected to a light source for irradiating a laser beam, and the other end of a concave mirror shape apart from the reflective surface of the cantilever by a predetermined distance; and an optical detector for detecting a signal reflected at the end of the concave mirror shape of the optical fiber through a directional coupler positioned at a predetermined location of the optical fiber and a signal incident through the end of the concave mirror shape of the optical fiber after being reflected at the reflective surface of the cantilever.