A nonoptical technique for tip-sample distance control in scanning near-field optical microscope (SNOM) is proposed and demonstrated. A tuning fork was used both as a dither and a sensor with high Q factor. The time-gating technique was employed as a scheme for vibrating the tip and sensing the tip-surface distance with the same fork. The time-gating scheme used could potentially be applied for studying various surface relaxation processes with submillisecond resolution.
|Number of pages||2|
|Journal||Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS|
|State||Published - 1 Jan 1997|
|Event||Proceedings of the 1997 Conference on Lasers and Electro-Optics, CLEO - Baltimore, MD, USA|
Duration: 18 May 1997 → 23 May 1997