QUANTITATIVE-ANALYSIS OF HOLOGRAPHIC PARTICLE DATA
UNSPECIFIED. (1993) QUANTITATIVE-ANALYSIS OF HOLOGRAPHIC PARTICLE DATA. OPTICS AND LASERS IN ENGINEERING, 18 (4). pp. 267-279. ISSN 0143-8166Full text not available from this repository.
There are several well known difficulties in forming and analysing holographic particle data in the micrometre and submicrometre size range. This paper suggests that these problems can be overcome by using a combination of research techniques. Firstly, it has been found that it is possible to record images of submicrometre particles by using conventional photographic materials. Essentially, a diffraction limited optical component has been used to provide aberration free particle images. Secondly, the sensitivity of the holographic material has been increased with the use of specialized holographic processing chemicals. Thirdly, it has been found that it is possible to encode holographically double, slightly displaced, particle images by using a pulse laser. Thus, Young's fringes can be obtained directly from the stored holographic data, and the particle velocity can be measured directly from the hologram. Fourthly, the holographic particle data can be automatically analysed, using a software program. Finally since the data is stored holographically, it is possible to obtain instantaneous 3-D particle velocities. This paper demonstrates that it is possible to perform holographic particle image velocimetry automatically, with only a small amount of preprocessing.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||OPTICS AND LASERS IN ENGINEERING|
|Publisher:||ELSEVIER SCI LTD|
|Number of Pages:||13|
|Page Range:||pp. 267-279|
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