Abstract
A calibration method for interferometric systems is shown to produce a minimum wave amplitude to which these systems may be calibrated in the measurement of harmonic surface acoustic waves. The calibration limit is ~3 orders of magnitude larger than the theoretical detection limit. The method proposed allows experimental determination of the detection limit of these systems. The calibration of a fiber-optic heterodyne interferometer is demonstrated, and the experimentally derived detection limit for the interferometer is shown to be 5.5 × 10−5 m for unity detection bandwidth. This limit is obtained for a mirrored specimen with 0.14 mW of laser power incident on the optical detector.
© 1988 Optical Society of America
Full Article | PDF ArticleMore Like This
R. Magnusson, J. Joe, and T. D. Black
J. Opt. Soc. Am. A 5(10) 1652-1654 (1988)
James J. Snyder
Appl. Opt. 27(21) 4465-4469 (1988)
R. Mezrich, D. Vilkomerson, and K. Etzold
Appl. Opt. 15(6) 1499-1505 (1976)