Ab initio investigation of lasing thresholds in photonic molecules
arXiv:1401.7305 · doi:10.1364/JOSAB.31.001867
Abstract
We investigate lasing thresholds in a representative photonic molecule composed of two coupled active cylinders of slightly different radii. Specifically, we use the recently formulated steady-state ab initio laser theory (SALT) to assess the effect of the underlying gain transition on lasing frequencies and thresholds. We find that the order in which modes lase can be modified by choosing suitable combinations of the gain center frequency and linewidth, a result that cannot be obtained using the conventional approach of quasi-bound modes. The impact of the gain transition center on the lasing frequencies, the frequency pulling effect, is also quantified.
References in corpus (7)
- Nonreciprocal light transmission in parity-time-symmetric whispering-gallery microcavities
- The physics of exceptional points
- Mayavi: a package for 3D visualization of scientific data
- Spectrally-engineered photonic molecules as optical sensors with enhanced sensitivity: a proposal and numerical analysis
- Scalable numerical approach for the steady-state ab initio laser theory
- Quantitative Verification of Ab Initio Self-consistent Laser Theory
- Beam shaping using genetically optimized two-dimensional photonic crystals