ODMR of impurity centers embedded in silicon microcavities

Abstract

FIGURE 1. The ODMR transmission experiment with the silicon quantum well of the p-type that is confined by the delta barriers containing the dipole centers of boron on the n-type Si (100) surface. The effective magnetic field caused by the Rashba spin-orbit interaction, B eff , results from the emf effect generated under optical illumination with linearly polarized light (a). The p-type quantum well doped with transition or rare-earth metals is introduced into the self-assembled microcavity system (b).Abstract. We present the findings of high efficient light absorption in self-assembled quantum wells (SQW) embedded in silicon microcavities that exhibit a distributed feedback identified by the FIR transmission spectra. The excitonic normal-mode coupling (NMC) is found to result in high efficient bound exciton photoluminescence in the range of the Rabi splitting. The bound excitons at the iron-boron pair and the erbium-related centers inserted in SQW are shown to cause giant exchange splitting of the center multiplets as a result of the strong sp-d and sp-f mixing in the absence of the external magnetic field. The NMC regime is observed to reveal this exchange splitting in the angular dependencies of the transmission spectra measured in the range of the Rabi splitting that are evidence of the ODMR of the trigonal ironboron pairs and trigonal erbium-related centers.