Title :
A statistical description of stimulated Brillouin scattering beam combination efficiency
Author :
Chu, Raijun ; Hua, Xue ; Mehringer, Ronald ; Suni, Paul ; Kanefsky, Morton ; Falk, Joel
Author_Institution :
Pittsburgh Univ., PA, USA
fDate :
6/1/1992 12:00:00 AM
Abstract :
The mutual coherence between two stimulated Brillouin signals produced by undepleted pump beams that are partially overlapped is studied. The mutual coherence of the stimulated-Brillouin-scattered beams determines the efficiency with which the two beams can be combined. The statistical properties of the mutual coherence are calculated. The mechanism for coupling of two stimulated-Brillouin-scattering outputs is four-wave mixing. Mutual coherence is found to depend on the pump beam´s pulse duration, the medium´s phonon lifetime, and the degree of overlap between the laser pump beams.<>
Keywords :
light coherence; multiwave mixing; optical pumping; statistical analysis; stimulated Brillouin scattering; coupling; four-wave mixing; laser pump beams; mutual coherence; overlap; phonon lifetime; pulse duration; statistical description; stimulated Brillouin scattering beam combination efficiency; stimulated Brillouin signals; undepleted pump beams; Acoustic beams; Acoustic waves; Astronomy; Brillouin scattering; Four-wave mixing; Laser beams; Laser excitation; Phonons; Physics; Pump lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
