46 citations · 253 across the 12 of their papers we have counts for
10 papers · 1 filter
Nonlinear optical anisotropy due to freed electrons
Jonathan Andreasen, Ewan M. Wright, Miroslav Kolesik
We present a computational study of the pump-probe response of a single atom to assess any microscopic nonlinear optical anisotropy due to freed electrons for non-resonant optical…
Inherent Stochastic Linearization of Random Laser Modes
Jonathan Andreasen, Hui Cao
Weakly scattering random lasers exhibit lasing modes that spatially overlap and can interact strongly via gain saturation. Consequently, lasing in high-threshold modes may be suppr…
Nonlinear effects in random lasers
Jonathan Andreasen, Patrick Sebbah, Christian Vanneste
Recent numerical and theoretical studies have demonstrated that the modes at threshold of a random laser are in direct correspondence with the resonances of the same system without…
Nonstationary Regime of Random Lasers
Jonathan Andreasen, Patrick Sebbah, Christian Vanneste
A numerical study is presented of one-dimensional and two-dimensional random lasers as a function of the pumping rate above the threshold for lasing. Depending on the leakiness of…
Numerical Study of Amplified Spontaneous Emission and Lasing in Random Media
Jonathan Andreasen, Hui Cao
We simulate the transition from amplified spontaneous emission (ASE) to lasing in random systems with varying degrees of mode overlap. This is accomplished by solving the stochasti…
Effects of Spatially Nonuniform Gain on Lasing Modes in Weakly Scattering Random Systems
Jonathan Andreasen, Christian Vanneste, Li Ge +1
A study on the effects of optical gain nonuniformly distributed in one-dimensional random systems is presented. It is demonstrated numerically that even without gain saturation and…