Excitonic terahertz absorption in semiconductors with effective-mass anisotropies

P. Springer, S. W. Koch, M. Kira

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


A microscopic approach is developed to compute the excitonic properties and the corresponding terahertz response for semiconductors characterized by anisotropic effective masses. The approach is illustrated for the example of germanium, where it is shown that the anisotropic electron mass in the L valley leads to two distinct terahertz absorption resonances separated by 0.8 meV. Thus, terahertz absorption spectroscopy can be applied to directly observe the mass anisotropy.

Original languageEnglish (US)
Pages (from-to)C30-C38
JournalJournal of the Optical Society of America B: Optical Physics
Issue number7
StatePublished - Jul 1 2016

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics


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