Abstract

An optical device which monitors movement of a transparent liquid in a thin-walled constant bore glass capillary tube is described. The change in electrical signal from the device is directly proportional to the distance moved by the liquid–air interface in the tube. Application of the device to the measurement of small contractions in volume, accompanying the polymerization of thin monomer films, is outlined.

© 1986 Optical Society of America

Optical measurement of the refractive index, layer thickness, and volume changes of thin films

A. H. M. Holtslag and P. M. L. O. Scholte
Appl. Opt. 28(23) 5095-5104 (1989)

Method to measure the optical properties of small volumes of diffusive media

Giovanni Zaccanti, Fabrizio Martelli, and Samuele Del Bianco
Appl. Opt. 41(34) 7317-7324 (2002)

Precise measurement of the change in the optical length of a fiber-optic Fabry-Perot interferometer

Toshio Ito
Appl. Opt. 25(7) 1072-1075 (1986)

Optical property measurements of turbid media in a small-volume cuvette with frequency-domain photon migration

Olivier Coquoz, Lars O. Svaasand, and Bruce J. Tromberg
Appl. Opt. 40(34) 6281-6291 (2001)

Radiation effects in materials for optical interferometric devices

Nicholas Koumvakalis, M. G. Jani, and Larry E. Halliburton
Appl. Opt. 25(23) 4288-4293 (1986)