Polarisation effects in optically-injected VCSELs

Spin polarised properties of optically injected VCSELs

“…In particular these include EQP, which has not been reported in our previous publications [4,5]. Ongoing work on this topic is concerned with a small-signal analysis of the QS behaviour and results of these investigations will be presented elsewhere.…”

“…Here the two carrier densities and the two polarised field amplitudes, E x and E y , are characterised by sinusoidal oscillations of very small amplitude around a fixed mean value. CLC is shown by dark blue in the dynamic map; this is an example of elliptical polarisation where all variables have the same frequency close to the relaxation oscillation frequency; further details of QS and CLC are discussed in our previous reports [4,5] where the details of the map were given only inside the symmetrical locking bandwidth (SLB). The EP and LP phenomena include LLC (white area), linear chaos (black area), elliptical chaos (light blue) and linear stability (light grey).…”

“…In the Spin Flip Model (SFM) [3] there are two carrier densities, the first, N, associated with the total carrier density and the second, m, as the electron spin magnetisation due to the difference between the densities of spin-up and spin-down electrons. In the SPI with low pumping values we have reported [4,5] the three linear polarisation (LP) phenomena of linear limit cycle (LLC), chaos and stability. However, the novelty of our work is more concerned with elliptical polarisation (EP) effects, namely QS, coupled limit cycle (CLC), coupled chaos (CC) and elliptical quasi-periodicity (EQP), all of which are due to the strong influence of birefringence effects.…”