Effects of Spatially Nonuniform Gain on Lasing Modes in Weakly Scattering Random Systems (2009)
Andreasen, Jonathan, Vanneste, Christian, Ge, Li, Cao, Hui
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 mode competition,...
Creation of New Lasing Modes with Spatially Nonuniform Gain (2009)
We report on the creation of new lasing modes with spatially nonuniform distributions of optical gain in a one-dimensional random structure. It is demonstrated numerically that even without gain...
Marginally Unstable Periodic Orbits in Semiclassical Mushroom Billiards (2009)
Andreasen, Jonathan, Cao, Hui, Wiersig, Jan, Motter, Adilson E.
Optical mushroom shaped billiards offer a unique opportunity to isolate and study non-dispersive, marginally unstable periodic orbits. Here we show that the openness of the cavity to external fields...
Finite-difference time-domain formulation of stochastic noise in macroscopic atomic systems (2009)
A numerical model based on the finite-difference time-domain method is developed to simulate fluctuations which accompany the dephasing of atomic polarization and the decay of excited state's...
FDTD Simulation of Thermal Noise in Open Cavities (2007)
Andreasen, Jonathan, Cao, Hui, Taflove, Allen, Kumar, Prem, Cao, Chang-qi
A numerical model based on the finite-difference time-domain (FDTD) method is developed to simulate thermal noise in open cavities owing to output coupling. The absorbing boundary of the FDTD grid is...