Polarization-resolved, subpicosecond pump–probe measurements at a wavelength of 3.43 μm are used to determine the electron spin relaxation time T1 in bulk InAs at room temperature. The measured T1 of 19±4 ps is in excellent agreement with the theoretical value of 21 ps, which is obtained from a nonperturbative calculation based on the D’yakonov–Perel’ mechanism of precessional spin relaxation [M. I. D’yakonov and V. I. Perel’, Sov. Phys. JETP 38, 177 (1974)].
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Boggess et al. (2000) studied this question.
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