Open AccessCubic model of a single-mode laser driven by quadratic pump noise and the steady probability distribution of laser intensity
Author(s) -
Xu De-Sheng,
Cao Li,
Di Wu
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.692
Subject(s) - intensity (physics) , laser , physics , quadratic equation , langevin equation , noise (video) , distribution (mathematics) , probability distribution , statistical physics , mathematical analysis , statistics , optics , mathematics , geometry , artificial intelligence , computer science , image (mathematics)
A single_mode laser cubic model driven with quadratic pump noise is proposed. Closed laser intensity Langevin equation is got. Based on our early work of the Approximation Fokker_Planck equation (AFPE) for the systems driven by nonlinear external noise Cao L and Wu D J 1988 Phys. Lett. A 133 476, the AFPE for laser intensity probability distribution is obtained. Exact analytic expression for the steady normalized intensity probability distribution is calculated. Based on the symmetry of steady normalized intensity probability distribution with respect to λ, the cross_correlation coefficient between the real and imaginary parts of pump noise, several general conclusions on the steady statistical property of laser system are reached.