| 摘要 |
<p>A near-field optical device (100), wherein the near-field interaction is subjected to a fundamental modulation at a fundamental frequency O, comprises an interferometer device (10) with an illumination light path (I) being directed to the probe (1), a reference light path (II) being directed to a detector device (20) and a signal light path (III) being directed from the probe (1) to the detector device (20), wherein the reference and signal light paths (II, III) are superimposed at the detector device (20), and a demodulation device (30) for determining the signal light components by demodulating the detector output signals, wherein the reference light path (H) does not contain the probe (1), an interferometer phase modulator (40) is arranged in the reference light path (ll) br signal light path (III), and the demodulation device (30) is adapted for determining the signal light components from the detector output signals obtained at three or more different interferometer states.</p> |
