Two color interferometry with nonlinear refractive properties

• Published in: Optik (Stuttgart) Vol. 114; no. 3; pp. 118 - 122
• Main Authors: Vikram, Chandra S., Witherow, William K.
• Format: Journal Article
• Language: English
• Published: Jena Elsevier GmbH 2003; Elsevier
• Subjects: Exact sciences and technology; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Interferometers; nonlinear refractive properties; numerical analysis; Optical instruments, equipment and techniques; Physics; temperature-concentration; Two color interferometry; temperature-concentration; nonlinear refractive properties; numerical analysis; Two color interferometry; Light interferometry; Quantity ratio; Temperature effects; Refractive index; Theoretical study; Numerical method; Nonlinear optics
• ISSN: 0030-4026; 1618-1336
• DOI: 10.1078/0030-4026-00232

Using nonlinear refractive properties of salt-water solution at two wavelengths, numerical analysis has been performed to extract temperature and concentration from virtual interferometric fringe data. The theoretical study, using a commercially available equation solving tool, starts with critical fringe counting needs and the role of nonlinear refractive properties in such measurements. Finally, methodology of the analysis, developed codes, and fringe counting accuracy needs are described in detail.