Abstract
The automatic beam superposition properties of the Wollaston prism are used to develop comparison beam systems for the simultaneous optical measurement of one, two and three components of the velocity vector in fluids. The systems do not require beam alignment for heterodyning, thus removing a traditional disadvantage of comparison beam systems compared with cross-beam systems and permitting full use of the fact that comparison beam systems are inherently better suited for multidimensional velocity measurement than cross-beam systems. The systems discussed use photodiodes (having one or more photosensitive areas) without preamplification. No electronic or optical high, low or narrow pass filters are used.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
