Previous methods of two-wavelength variable-sensitivity interferometry are reviewed and a simplified two-wavelength technique for interferometric testing under static conditions is discussed. An extension of the static technique to real-time dynamic testing is proposed and an operational variable-sensitivity interferometer utilizing the real-time technique is described.
© 1973 Optical Society of America
Original Manuscript: March 5, 1973
Published: September 1, 1973
C. Polhemus, "Two-Wavelength Interferometry," Appl. Opt. 12, 2071-2074 (1973)