Numerical study of Risken–Nummedal–Graham–Haken instability in mid-infrared Fabry–Pérot quantum cascade lasers
| dc.contributor.author | Vukovic, Nikola | |
| dc.contributor.author | Radovanovic, Jelena | |
| dc.contributor.author | Milanovic, Vitomir | |
| dc.contributor.author | Boiko, Dmitri L. | |
| dc.date.accessioned | 2022-02-14T17:08:17Z | |
| dc.date.available | 2022-02-14T17:08:17Z | |
| dc.date.issued | 2020-01-29 | |
| dc.description.abstract | We review our recent theoretical studies on multimode instabilities in Fabry–Pérot cavity mid-infrared quantum cascade lasers (QCLs) caused by parametric excitation of Rabi flopping oscillations. Numerical simulations are based on the semiclassical traveling wave Maxwell–Bloch equations. QCLs with a few mm cavity without an absorber exhibit intermittent RNGH self-pulsations, while regular self-pulsations are possible in short-cavity QCLs, with the cavity length of 100 ?m or smaller. However, the second threshold in short-cavity QCLs is significantly increased compared to the values for a few mm long devices. We provide here a new insight on RNGH instability via bifurcation analysis of the output waveform and studies of the recurrence period density entropy. We propose an interpretation of the broadening/narrowing of the optical spectrum of a QCL i.e. switching the RNGH instability on and off observed in experiment. | |
| dc.identifier.citation | Optical and Quantum Electronics, vol. 52 (2), pp. 91 | |
| dc.identifier.doi | 10.1007/s11082-020-2210-4 | |
| dc.identifier.issn | 1572-817X | |
| dc.identifier.uri | https://hdl.handle.net/20.500.12839/967 | |
| dc.identifier.url | https://doi.org/10.1007/s11082-020-2210-4 | |
| dc.title | Numerical study of Risken–Nummedal–Graham–Haken instability in mid-infrared Fabry–Pérot quantum cascade lasers | |
| dc.type | Journal Article | |
| dc.type.csemdivisions | BU-I | |
| dc.type.csemresearchareas | Photonics |