Interseries transitions between Rydberg excitons in Cu${}_2$O

Abstract

We investigate the infrared optical transitions between excitons of the yellow, green and blue series in the cuprous oxide Cu${}_2$O. We show that in many cases the dipole approximation is inadequate and, in particular, that it breaks down in yellow-blue transitions even for moderate principal quantum numbers of $n\approx 10$. The interband matrix elements of the transition operator needed for the evaluation of the excitonic transition strengths are derived from known as well as from fitted band parameters.

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Cited by in corpus (6)

• Giant Rydberg excitons in Cu${}_2$O probed by photoluminescence excitation spectroscopy
• Interaction of charged impurities and Rydberg excitons in cuprous oxide
• Green exciton series in cuprous oxide
• Temperature Study of Rydberg Exciton Optical Properties in Cu2O
• Rydberg excitons in electric and magnetic fields obtained with the complex-coordinate-rotation method
• Interseries dipole transitions from yellow to green excitons in cuprous oxide