Dynamic Nonlinear Effect on Lasing in a Random Medium

Abstract

We have studied the dynamic effect of nonlinearity on lasing in disordered medium. The third-order nonlinearity not only changes the frequency and size of lasing modes, but also modifies the laser emission intensity and laser pulse width. When the nonlinear response time is comparable to or longer than the lifetime of the lasing mode, the nonlinearity changes the laser output through modifying the size of the lasing mode. When the nonlinear response is much faster than the buildup of the lasing mode, positive nonlinearity always extracts more laser emission from the random medium due to the enhancement of single particle scattering.

12 pages, 5 figures

References in corpus (3)

• Random-Matrix Theory of Quantum Transport
• Random Resonators and Prelocalized Modes in Disordered Dielectric Films
• Instabilities of waves in nonlinear disordered media

Cited by in corpus (6)

• Adaptive pumping for spectral control of random lasers
• Light diffusion and localization in 3D nonlinear disordered media
• Nonlinear effects in random lasers
• Time-dependent Debye-Mie Series Solutions for Electromagnetic Scattering
• Pulse propagation in one-dimensional disordered photonic crystals: Interplay of disorder with instantaneous and relaxing nonlinearities
• Different regimes of ultrashort pulse propagation in disordered layered media with resonant loss and gain