Abstract
Modulated reflectance spectroscopy and resonant Raman scattering have been used to study the quantized states of crescent-shaped GaAs quantum wires. Distinct one-dimensional excitonic transitions originating from the quantum wires together with the expected resonances from the bent quantum wells are observed. The quantum wire transition energies compare very well with those calculated using a V-shaped potential derived from transmission electron microscopy measurements of the lateral variation of the GaAs well width. The spectroscopic techniques employed here provide alternative methods of probing the confined states in quantum wires of low luminescence efficiency.
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