Title :
A model of spontaneous Brillouin scattering as the noise source for stimulated scattering
Author :
Nguyen-Vo, N.-M. ; Pfeifer, S.J.
Author_Institution :
Northrop Corp., Hawthorne, CA, USA
fDate :
2/1/1993 12:00:00 AM
Abstract :
A model of spontaneous Brillouin scattering in the presence of a high power pump beam has been developed and incorporated into a wave optics model of backward stimulated Brillouin scattering, providing a realistic distributed noise source for the numerical evaluation of the stimulated process. The model is used to assess the location of the dominant noise contributions in determining the reflectivity and conjugation fidelity of the Stokes return. The effect of f-number and power over threshold is evaluated. The model is validated with experimental data on threshold and conjugation fidelity in the presence of a pump beam with a periodic phase aberration
Keywords :
Brillouin spectra; optical phase conjugation; random noise; stimulated Brillouin scattering; Stokes return; backward stimulated Brillouin scattering; conjugation fidelity; distributed noise source; f-number; high power pump beam; noise source; periodic phase aberration; power; pump beam; reflectivity; spontaneous Brillouin scattering; stimulated scattering; threshold; wave optics model; Brillouin scattering; Fluctuations; Laser excitation; Light scattering; Optical noise; Optical scattering; Phase noise; Phonons; Rayleigh scattering; Reflectivity;
Journal_Title :
Quantum Electronics, IEEE Journal of
