High accuracy semiconductor laser doppler velocimeter
作者： Paul E. Bjork , Hans W. Mocker
DOI:
关键词: Laser beam quality 、 Beam expander 、 Splitter 、 Radial polarization 、 Optics 、 Beam (structure) 、 Laser 、 Materials science 、 Beam parameter product 、 Beam diameter
摘要: A Doppler velocimeter having a semiconductor laser which sends beam through polarization splitter onto an fractional-wavelength plate. The plate both reflects the back to and on expander target. is returned by passes splitter. reflected beams are directed detector. detector mixes signal spectrum analyzer velocity of target can be accurately determined.
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