6 August 1993 Optical fiber LDA offering high resolution and relatively long working distance
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Proceedings Volume 2052, Fifth International Conference on Laser Anemometry: Advances and Applications; (1993) https://doi.org/10.1117/12.150528
Event: Laser Anemometry: Advances and Applications: Fifth International Conference, 1993, Koningshof, Veldhoven, Netherlands
Abstract
A differential LDA system is described, which employs twin front lens transmitting optics and provides a very small probe volume of 9 microns diameter combined with relatively large working distance of 135 mm. The system incorporates optical fibers and frequency shifting using either a Bragg cell or rotating diffraction grating. The advantages of the twin front lens approach for systems with a high ratio of working distance to size of probe volume are discussed and the positional tolerances required when using a rotating diffraction grating in conjunction with single mode fibers are analyzed. Finally, some experimental data are presented to confirm the optical properties and performance of the system.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. I. Robinson, D. I. Robinson, J. T. Turner, J. T. Turner, } "Optical fiber LDA offering high resolution and relatively long working distance", Proc. SPIE 2052, Fifth International Conference on Laser Anemometry: Advances and Applications, (6 August 1993); doi: 10.1117/12.150528; https://doi.org/10.1117/12.150528
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