43 citations · 87 across the 5 of their papers we have counts for
6 papers
Regular Self-Pulsations in External Cavity Mid-IR Quantum Cascade Lasers
Nikola N. Vukovic, Jelena V. Radovanovic, Vitomir B. Milanovic +4
We show theoretically and experimentally that a quantum cascade laser (QCL) in an external Fabry-Perot cavity (EC) can produce regular self-pulsations (SP) of the output intensity…
Transmission singularities in resonant electron tunneling through double complex potential barrier
Nikola Opacak, Vitomir Milanovic, Jelena Radovanovic
Tunneling of electrons through a barrier with complex potential is investigated. We focus on two cases, symmetric double rectangular barrier and double delta potential barrier, and…
Analytical expression for Risken-Nummedal-Graham-Haken instability threshold in quantum cascade lasers
Nikola Vukovic, Jelena Radovanovic, Vitomir Milanovic +1
We have obtained a closed-form expression for the threshold of Risken-Nummedal-Graham-Haken (RNGH) multimode instability in a Fabry-Pérot (FP) cavity quantum cascade laser (QCL). T…
Low-threshold RNGH instabilities in quantum cascade lasers
Nikola Vukovic, Jelena Radovanovic, Vitomir Milanovic +1
A theoretical study on low-threshold multimode instabilities in quantum cascade lasers (QCLs) and laser diodes (LDs) is presented. Previously, low threshold Risken-Nummedal-Graham-…
Magnetotunnelling in resonant tunnelling structures with spin-orbit interaction
Goran Isić, Dragan Indjin, Vitomir Milanović +3
Magnetotunnelling spectroscopy of resonant tunnelling structures provides information on the nature of the two-dimensional electron gas in the well. We describe a model based on no…
Density matrix theory of transport and gain in quantum cascade lasers in a magnetic field
Ivana Savic, Nenad Vukmirovic, Zoran Ikonic +4
A density matrix theory of electron transport and optical gain in quantum cascade lasers in an external magnetic field is formulated. Starting from the general quantum kinetic trea…