Title :
Speckle contrast reduction from a large core fibre delivering Q-switched pulses
Author :
Parry, J.P. ; Shephard, J.D. ; Jones, J.D.C. ; Hand, D.P.
Author_Institution :
Heriot-Watt Univ., Edinburgh, UK
Abstract :
In this paper, we describe a technique to smooth the Q-switched pulse output from the large core fibre by effectively reducing the degree of coherence of the laser beam before launch and thus reducing contrast in the speckle. Whilst developed for PIV, the technique is capable of general applicability.
Keywords :
Q-switching; fibre lasers; laser velocimetry; PIV technique; large-core fibre delivering Q-switched pulses; laser beam coherence reduction; particle image velocimetry; speckle contrast reduction; Adaptive optics; Fiber lasers; Laser beams; Lighting; Optical fiber polarization; Optical pulses; Optical waveguides; Power lasers; Speckle; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568294
