Figure 3From: Raman scattering of InAs/AlAs quantum dot superlattices grown on (001) and (311)B GaAs surfacesRaman spectra and the calculated frequency positions. (a) Raman spectra for samples A001, B001, C001, D001 and A113, C113, D113 (blue and red curves, respectively) measured in acoustic spectral range with excitation wavelength of 514.5 nm. (b) The calculated frequency positions of folded LA and QLA phonons shown by blue and red triangles, respectively.Back to article page