Strong coupling in monolithic microcavities with ZnSe quantum wells

Polariton lasing in high-quality selenide-based micropillars in the strong coupling regime

“…The high-index material of the DBRs consists of ZnMgSSe and the lowindex material is a short period superlattice of MgS/ZnCdSe (further growth details are available elsewhere 20,21 ). Previous X-ray diffraction and transmission electron microscopy investigations show that the structure is fully lattice matched to the GaAs substrate and reveals a low defect density compared to state of the art II-VI materials.…”

Fabrication of ZnSe‐based microcavities for lasing in the strong coupling regime and polariton confinement

“…4(a) and (b), respectively. An additional branch can be identified at 2.8115 eV and is attributed to the lower polariton (LP) of a sample region with a slightly different cavity thickness which is illuminated during the reflectivity measurement as well [15]. In a recent study it was shown that, as expected, the sample area showing pure cavity emission possesses a small β factor (fraction of spontaneous emission coupled into the cavity mode) of 0.01 which is comparable to classical VCSEL structures.…”

“…They can be identified as lower polariton branch (LP) and upper polariton branch (UP), showing a vacuum Rabi splitting energy of 19 meV at zero detuning [15]. The according k-space micro-reflectivity and its sim- ulation are shown in Fig.…”

Influence of the sample design on the strong light-matter coupling in ZnSe-based periodic structures

“…These results have shown that a remarkably large Rabi-splitting energy can even be realized with eight Bragg-polariton stacks. The observed interaction strength is comparable to a complete MC structure consisting of an 18-fold bottom DBR, a λ cavity, and a 15-pair top DBR, for which a Rabi-splitting energy of 19 meV was reported at 70 K [11]. In order to fully exploit the promising properties of a Bragg-polariton sample one has to achieve the strong coupling regime near room temperature without scaling up the fabrication effort.…”