@article{oai:niigata-u.repo.nii.ac.jp:00002218, author = {Suzuki, Takamasa and Sasaki, Osami and Maruyama, Takeo}, issue = {2}, journal = {Optical Engineering, Optical Engineering}, month = {Feb}, note = {A new type of two-wavelength interferometer which applies a phase-lock technique is described. The wavelength tenability of a laser diode (LD) is used for phase modulation and phase control in this interferometer. Since the two wavelengths are derived from a single LD in our system, the optical system is simple and there is no need to consider the fluctuation of relative wavelength between the two LD's in the conventional two-wavelength interferometers. The equivalent wavelength Λ is 15 mm and the measurement accuracy reaches-Λ/400. The error sources in the system and the error analysis are also described.}, pages = {492--497}, title = {Absolute distance measurement using wavelength-multiplexed phase-locked laser diode interferometry}, volume = {35}, year = {1996} }