Coherent instabilities in a semiconductor laser with fast gain recovery
C. Y. Wang, L. Diehl, A. Gordon, C. Jirauschek, F. X. Kaertner, A. Belyanin, D. Bour, S. Corzine, G. Hoefler, M. Troccoli, J. Faist, F. Capasso
Abstract
We report the observation of a coherent multimode instability in quantum cascade lasers (QCLs), which is driven by the same fundamental mechanism of Rabi oscillations as the elusive Risken-Nummedal-Graham-Haken (RNGH) instability predicted 40 years ago for ring lasers. The threshold of the observed instability is significantly lower than in the original RNGH instability, which we attribute to saturable-absorption nonlinearity in the laser. Coherent effects, which cannot be reproduced by standard laser rate equations, can play therefore a key role in the multimode dynamics of QCLs, and in lasers with fast gain recovery in general.
Create a lesson
Related papers
Ultra-Low-Loss Silicon Nitride on Sapphire for Broad-Transparency Nonlinear and Quantum Photonics
Abdur-Raheem Al-Hallak, Shuai Liu, Kailu Zhou et al.
Self-starting Dynamics in All-fibre All-Normal-Dispersion Thulium Mamyshev oscillator
Dennis C. Kirsch, Kirill Grebnev, Alberto Rodriguez Cuevas et al.
Field-driven attosecond deflection of electron beams at the position of planar foils
Xiaofan Gui, Kenichi L. Ishikawa, Yuya Morimoto
Cavity Solitons
W. J. Firth, G. K. Harkness
Ultra-broadband transient absorption down to 200 nm enabled by soliton dynamics in gas-filled hollow capillary fibers
Pieter J. Brongers, Kyle Barlow, Deepjyoti Satpathy et al.
Dual-Symmetrized Construction of Electromagnetic Beams Beyond the Paraxial Approximation with an Explicit Separation of Scalar and Vectorial Corrections
Abdullah F. Alharbi, Kayn A. Forbes