Patent ID: 7130755

Claim:
A near-field microscope comprising: a wave source generating a wave, a frequency of the wave being adjustable by the wave source; a dielectric resonator propagating the wave from the wave source, a resonance frequency, impedance, a Q factor and an electromagnetic wave mode thereof being freely adjustable; a probe scanning the wave output from the dielectric resonator on a sample; a distance adjusting unit measuring a distance between the probe and the sample and maintaining the distance to a predetermined value; and a detector detecting a wave that propagates through the probe, interacts with the sample and then propagates through the probe and the dielectric resonator, wherein the distance adjusting unit comprises: a tuning fork on a surface of which the probe is attached; and a lock-in amplifier applying an AC voltage to the tuning fork and measuring a value of an output current from the tuning fork, the AC voltage having a frequency corresponding to a resonance frequency of the tuning fork having the probe attached on one side surface thereof.