Abstract
A technique that is easy to implement and sensitive for measuring lateral oscillation amplitudes of optical fibers on the nanometer scale for shear-force microscopy is described. The measurement system analyzed here is based on using the optical fiber tip as a cylindrical lens to focus and deflect a detection beam. It is shown that for our experimental arrangement, this technique is at least 2.5 times as sensitive as merely shadowing the edge of such a beam, as in most commonly used configurations. As a result, oscillation amplitudes of the order of 2–3 nm may easily be measured. An advantage of this system is that absolute vibration amplitudes are easily measured. A simple geometric model is used to describe the operation of the system.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
Jang-Hoon Yoo, Jae-Hoon Lee, Sang-Youp Yim, Seung-Han Park, Myong-Do Ro, Joo-Ho Kim, In-Sik Park, and Kyuman Cho
Opt. Express 12(19) 4467-4475 (2004)
Dominique Barchiesi, Olivier Bergossi, Michel Spajer, and Christian Pieralli
Appl. Opt. 36(10) 2171-2177 (1997)
Sergey I. Bozhevolnyi and Brian Vohnsen
J. Opt. Soc. Am. B 14(7) 1656-1663 (1997)