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(Color online) Evolution of normalized absorption quantum beats with photon energy. The base line and zero delay time are shifted for clarity. All data are taken at and with a carrier concentration of . The dotted lines are guides for eye to show the period variation of the normal and reversed beats.
(Color online) Calculated total differential absorption spectrum, and , and individual BGR contributions, and , with consideration of spin-dependent band-filling and band-gap renormalization effects, respectively, at the beginning and a half of Larmor precession period as well as spin-independent hole-filling contribution, HF (a). Calculated total spin-dependent electron filling, and , and individual electron filling from Ch state, and , as well as individual electron filling from Cl state, and , respectively, at the beginning and a half of Larmor precession period (b). The Cl and Ch are the electron states probed from light- and heavy-hole valence bands, respectively, as shown in the band structure sketch of GaAs in (b) for a circularly polarized probe.
(Color online) Excess-energy dependence of electron g factor. The red and black points are experimental results. The red and black lines are best linear fittings to the red and black points, respectively. Green line is a theoretical prediction by a formula , where is the excess energy in unit of eV. The excess energies of Cl and Ch states vs photon energy are plotted by the black and red dashed lines, respectively. The black and red dotted lines are guides for g value of Cl or Ch states seen by a given probe photon, respectively.
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