Complex delay dynamics of high power quantum cascade oscillators

F. Grillot; T. C. Newell; A. Gavrielides; M. Carras

doi:10.1117/12.2275630

23 August 2017 Complex delay dynamics of high power quantum cascade oscillators

F. Grillot, T. C. Newell, A. Gavrielides, M. Carras

Proceedings Volume 10383, Terahertz Emitters, Receivers, and Applications VIII; 103830D (2017) https://doi.org/10.1117/12.2275630
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

Quantum cascade lasers (QCL) have become the most suitable laser sources from the mid-infrared to the THz range. This work examines the effects of external feedback in different high power mid infrared QCL structures and shows that different conditions of the feedback wave can produce complex dynamics hence stabilization, destabilization into strong mode-competition or undamping nonlinear oscillations. As a dynamical system, reinjection of light back into the cavity also can also provoke apparition of chaotic oscillations, which must be avoided for a stable operation both at mid-infrared and THz wavelengths.

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Citation Download Citation

F. Grillot, T. C. Newell, A. Gavrielides, and M. Carras "Complex delay dynamics of high power quantum cascade oscillators", Proc. SPIE 10383, Terahertz Emitters, Receivers, and Applications VIII, 103830D (23 August 2017); https://doi.org/10.1117/12.2275630

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