Title :
Use of hololenses for generation of speckle correlation fringes in LDA measurement volume
Author :
Ghosh, A. ; Nirala, A.K. ; Yadav, H.L.
Author_Institution :
Dept. of Appl. Phys., ISM Dhanbad, Dhanbad, India
Abstract :
In present investigation we propose a simple optical technique for generation of good quality, high contrast speckle correlation fringes of different spatial frequency depending upon the suitability of different flow condition and particle size at LDA measurement volume by illuminating double exposure specklegrams recorded in different inplane translation and rotation condition using hololenses on high resolution silver halide plates.
Keywords :
flow visualisation; laser Doppler anemometry; lenses; speckle; LDA measurement; LDA measurement volume; double exposure specklegram; high resolution silver halide plates; hololens; optical technique; particle size; rotation condition; spatial frequency; speckle correlation fringes; speckle correlation fringes generation; Adaptive optics; Filtering; Holography; Laser beams; Measurement by laser beam; Speckle; Volume measurement; LDA; hololens; measurement volume; speckle correlation fringes; specklegram;
Conference_Titel :
Microwave and Photonics (ICMAP), 2013 International Conference on
Conference_Location :
Dhanbad
Print_ISBN :
978-1-4799-2176-8
DOI :
10.1109/ICMAP.2013.6733557
