1997/07/01 by Koji Matsubara, Wilhelm Stork, Armin Wagner +2 · 1 citation
Engineering · #Advanced Fiber Optic Sensors #Semiconductor Lasers and Optical Devices #Surface Roughness and Optical Measurements
paper · doi:10.1364/ao.36.004516
openalex publication_date 1997/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
A formula that can analyze the laser Doppler velocimeter spectrum was derived. The formula showed good agreement with computational experimental results. The use of a Fourier transform lens as detection optics was proposed and was found to be independent of the displacement of the object along the direction parallel to the optical axis. An experimental method was also proposed that can make the simultaneous measurement of velocity and displacement possible simply by adding a second detector. By using two detectors, not only can displacement of the surface be measured, but also the results of the speed measurement can be compensated for.