X. Yin, H.-M. Chen, et al.
Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Paper
Enhanced electro-optic properties of low-temperature-growth GaAs and AlGaAs
Abstract
The signal-bandwidth products of excitonic electroabsorption of low-temperature-growth (LTG) molecular beam epitaxial films of GaAs and Al0.25Ga0.75As are larger than in the related stoichiometric materials. The enhanced electro-optic properties of these composites may be caused by increased inhomogeneity of dc electric fields. The differential transmission in LTG Al0.25Ga0.75As annealed at 750°C for 30 s is relatively broadband and approaches 60% for dc electric fields of only 1.5×104 V/cm.
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