Title :
The spatial and temporal coherence properties of the excitation wavefield of a dynamic Gaussian aperture
Author :
Shaarawi, Amr M.
Author_Institution :
Dept. of Eng. Phys. & Math., Cairo Univ., Giza, Egypt
Abstract :
The coherence properties of the transient excitation of a focus wave mode dynamic aperture is studied. The source investigated is the dynamic analogue of a Schell-model Gaussian beam. It is shown that the focus wave mode aperture corresponds to the case of a fully coherent source. The spatial and temporal coherence properties of the excitation field reflect the dynamic character of the generating aperture. It is demonstrated that using a partially coherent dynamic aperture we can improve the propagation characteristics of the generated pulses
Keywords :
Gaussian processes; electromagnetic fields; electromagnetic wave propagation; focusing; Schell-model Gaussian beam; coherent source; dynamic Gaussian aperture; dynamic analogue; excitation field; excitation wavefield; focus wave mode aperture; generated pulses; partially coherent dynamic aperture; propagation characteristics; spatial coherence properties; temporal coherence properties; Apertures; Bandwidth; Character generation; Coherence; Equations; Fluctuations; Frequency; Lighting; Physics; Pulse generation;
Conference_Titel :
Southeastcon '97. Engineering new New Century., Proceedings. IEEE
Conference_Location :
Blacksburg, VA
Print_ISBN :
0-7803-3844-8
DOI :
10.1109/SECON.1997.598620
