Abstract
A novel two-wavelength interferometer is demonstrated that uses a tunable two-color laser-diode array as the light source. The synthetic wavelength can be easily tuned from 2 to 0.043 mm by variation of the spectral separation between the two wavelengths of the laser output. By using the second-order correlation technique we can directly retrieve the phase change at the synthetic wavelength with no need for sophisticated electronic signal processing.
© 1995 Optical Society of America
Full Article | PDF ArticleMore Like This
Chi-Luen Wang and Ci-Ling Pan
Opt. Lett. 20(11) 1292-1294 (1995)
Ribun Onodera and Yukihiro Ishii
Appl. Opt. 34(22) 4740-4746 (1995)
Ribun Onodera and Yukihiro Ishii
Opt. Lett. 20(24) 2502-2504 (1995)