Transient Optics and Plasmonics
electron (S= +1/2, −1/2) and hole (J= +3/2, −3/2) spin projections, respectively. The selection rules for optical transitions allow the coupling of the ±1/2 and ±3/2 states, respectively. An additional [...] energy is presented in Figure 3.1. In case of spectrally narrow pulses with durations of τ D =1 ps a strong dependence of pulse delay on the photon energy ħ ω is observed, see Fig. 3.1(a). The delay time increases [...] induces a coherent superposition of optically accessible electron and trion states (e.g. S=+1/2, J=+3/2 - called optical coherence ). It leads to Larmor precession of the electron spin in the ground state …
