Abstract
Interferometers with long optical paths in air usually require knowledge and control of air dispersion. In addition, the measurements at several wavelengths and the dispersion properties of air allow errors caused by air turbulence to be compensated for. An innovative technique for air-dispersion measurement is described for long-baseline ground-based stellar interferometers. The technique combines second-harmonic interferometry and heterodyne detection to permit high-resolution measurement even for low optical powers. Experimental results show measurements of air dispersion in good agreement with the values predicted from the Edlén equation.
© 2002 Optical Society of America
Full Article | PDF ArticleMore Like This
Serge Dubovitsky, Oliver P. Lay, and David J. Seidel
Opt. Lett. 27(8) 619-621 (2002)
Roger C. Hart, G. C. Herring, and R. Jeffrey Balla
Opt. Lett. 27(9) 710-712 (2002)
Daesuk Kim, Soohyun Kim, Hong Jin Kong, and Yunwoo Lee
Opt. Lett. 27(21) 1893-1895 (2002)