Title :
Dynamics of spatial solitons in laser with saturable absorber
Author :
Minovich, Alexander E. ; Romanov, Oleg G.
Author_Institution :
Laser Phys. & Spectrosc. Dept., Belarusian State Univ., Minsk
Abstract :
The theoretical model of spatial soliton formation in lasers with saturable absorber based on the set of Maxwell-Bloch equations has been developed. The case of fast saturable absorber is considered. An analytical solution in form of one-dimensional laser autosolitons is obtained and the problem of soliton stability in respect with spatially inhomogeneous perturbations is analyzed. It is shown that the solitons in laser with fast saturable absorber are metastable and they decay to homogeneous lasing or non-lasing mode via repulsion of spatial domain walls. The results of numerical calculations of dynamics of the light field in the laser cavity, based on explicit and non-explicit two-layer finite-difference approximation of the laser field equation, illustrate the main features of the process of laser spatial solitons formation and evolution
Keywords :
Maxwell equations; finite difference methods; laser beams; laser cavity resonators; optical bistability; optical saturable absorption; optical solitons; Maxwell-Bloch equation; homogeneous lasing; laser cavity; laser field equation; one-dimensional laser autosoliton; optical bistability; saturable absorber; soliton stability; spatial domain wall; spatial soliton; spatially inhomogeneous perturbation; two-layer finite-difference approximation; Electronic mail; Laplace equations; Laser modes; Laser stability; Laser theory; Optical bistability; Optical computing; Physics; Solitons; Spectroscopy;
Conference_Titel :
Laser and Fiber-Optical Networks Modeling, 2005. Proceedings of LFNM 2005. 7th International Conference on
Conference_Location :
Yalta, Crimea
Print_ISBN :
0-7803-9147-0
DOI :
10.1109/LFNM.2005.1553204
