Coexistence of Coherent Pulses Formed by Superradiant and Quasi-Stationary Modes in a Laser with Low-Q Cavity

We perform numerical simulation and qualitative analysis of the earlier-predicted simultaneous generation of different quasiperiodic pulse trains in a continuously pumped multimode superradiant laser with self-locking of some modes. For typical parameters of a superradiant gain medium with a strong...

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Bibliographic Details
Published in:Radiophysics and quantum electronics 2021-04, Vol.63 (11), p.887-907
Main Authors: Kocharovskaya, E. R., Mishin, A. V., Seleznev, A. F., Kocharovsky, V. V., Kocharovsky, Vl. V.
Format: Article
Language:English
Subjects:
Analysis
Astronomy
Astrophysics and Astroparticles
Fabry-Perot interferometers
Hadrons
Heavy Ions
Holes
Lasers
Line spectra
Locking
Mathematical and Computational Physics
Nuclear Physics
Numerical analysis
Observations and Techniques
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Qualitative analysis
Quantum Optics
Questions and answers
Simulation methods
Solitary waves
Theoretical
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Summary:We perform numerical simulation and qualitative analysis of the earlier-predicted simultaneous generation of different quasiperiodic pulse trains in a continuously pumped multimode superradiant laser with self-locking of some modes. For typical parameters of a superradiant gain medium with a strong inhomogeneous broadening of the spectral line, the main features of the dynamic spectra of the generated modes and the statistics of the mode-formed pulses have been revealed in a number of typical examples of the combined low-Q Fabry–Perot cavities with distributed feedback of waves. Lasers with both essentially asymmetric and almost symmetric spectra of modes are considered. In the most interesting case of moderate exceeding of the lasing threshold, the spectrum consists of two superradiant and a large number of quasi-stationary modes and corresponds to the comparable (in terms of power) sequences of superradiant pulse trains and soliton-like pulses of locked modes.
ISSN:0033-8443
1573-9120
DOI:10.1007/s11141-021-10102-x