Interference fringes remain parallel and focus-spot diameter same. Scanning system proposed for laser velocimeter (laser Doppler anemometer) to maintain constant beam-crossing angle and beam-waist diameter maintaining beam waist locations at crossing points. As target fluid scanned, interference fringes formed by crossing beams remain parallel and the focus-spot diameter same. System allows accurate velocity profiles obtained in wind tunnels and other fluid flow systems.
Seeded flows measured optically. Laser Doppler velocimeter integrated with wind-tunnel pressure vessel with mounting system minimizing effects of vibrations and of pressure and thermal strains.
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text William D. Gunter and Anemarie De Young, "New properties of afocal lens pairs with Gaussian beams," Appl. Opt. 25, 1742-1744 (1986) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Anemarie De Young and William D. Gunter, "Fiber optics transmission of LV signal," Appl. Opt. 20, 3096-3097 (1981) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
