1k citations · 2.4k across the 11 of their papers we have counts for
11 papers
Symmetry, stability, and computation of degenerate lasing modes
David Liu, Bo Zhen, Li Ge +6
We present a general method to obtain the stable lasing solutions for the steady-state ab-initio lasing theory (SALT) for the case of a degenerate symmetric laser in two dimensions…
Diffusive to quasi-ballistic random laser: incoherent and coherent models
W Guerin, Yidong Chong, Q Baudouin +3
We study the crossover between the diffusive and quasi-ballistic regimes of random lasers. In particular, we compare incoherent models based on the diffusion equation and the radia…
Steady-state ab-initio laser theory for lasers with fully or nearly degenerate resonator modes
Stephan Burkhardt, Matthias Liertzer, Dmitry O. Krimer +1
We investigate the range of validity of the recently developed steady-state ab-initio laser theory (SALT). While very efficient in describing various microlasers, SALT is conventio…
Loss-induced suppression and revival of lasing
B. Peng, S. K. Ozdemir, S. Rotter +6
Controlling and reversing the effects of loss are major challenges in optical systems. For lasers losses need to be overcome by a sufficient amount of gain to reach the lasing thre…
Reversing the Pump-Dependence of a Laser at an Exceptional Point
M. Brandstetter, M. Liertzer, C. Deutsch +6
When two resonant modes in a system with gain or loss coalesce in both their resonance position and their width, a so-called "Exceptional Point" occurs which acts as a source of no…
Scalable numerical approach for the steady-state ab initio laser theory
S. Esterhazy, D. Liu, M. Liertzer +7
We present an efficient and flexible method for solving the non-linear lasing equations of the steady-state ab initio laser theory. Our strategy is to solve the underlying system o…
Route from spontaneous decay to complex multimode dynamics in cavity QED
Dmitry O. Krimer, Matthias Liertzer, Stefan Rotter +1
We study the non-Markovian quantum dynamics of an emitter inside an open multimode cavity, focusing on the case where the emitter is resonant with high-frequency cavity modes. Base…
Pump-Controlled Directional Light Emission from Random Lasers
Thomas Hisch, Matthias Liertzer, Dionyz Pogany +2
The angular emission pattern of a random laser is typically very irregular and difficult to tune. Here we show by detailed numerical calculations that one can overcome the lack of…
Photoionization of helium by attosecond pulses: extraction of spectra from correlated wave functions
Luca Argenti, Renate Pazourek, Johannes Feist +5
We investigate the photoionization spectrum of helium by attosecond XUV pulses both in the spectral region of doubly excited resonances as well as above the double ionization thres…
Multi-electron transitions induced by neutron impact on helium
M. Liertzer, J. Feist, S. Nagele +1
We explore excitation and ionization by neutron impact as a novel tool for the investigation of electron-electron correlations in helium. We present single and double ionization sp…
Pump-induced Exceptional Points in Lasers
M. Liertzer, Li Ge, A. Cerjan +3
We demonstrate that the above-threshold behavior of a laser can be strongly affected by exceptional points which are induced by pumping the laser nonuniformly. At these singulariti…