Single-frequency laser spectroscopy of the boron bound exciton in S 28 i

A. Yang, M. Steger, T. Sekiguchi, D. Karaiskaj, M. L.W. Thewalt, M. Cardona, K. M. Itoh, H. Riemann, N. V. Abrosimov, M. F. Churbanov, A. V. Gusev, A. D. Bulanov, I. D. Kovalev, A. K. Kaliteevskii, O. N. Godisov, P. Becker, H. J. Pohl, J. W. Ager, E. E. Haller

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While the first comparison of shallow bound exciton photoluminescence between natural Si and highly enriched S 28 i dramatically demonstrated the importance of inhomogeneous isotope broadening, the transitions in S 28 i were in fact too narrow to be resolved with the then available instrumental resolution of 0.014 cm-1. We report results for the boron bound exciton transition in highly enriched S 28 i using a novel apparatus for photoluminescence excitation spectroscopy based on a tuneable single-frequency laser source with sub-MHz resolution. Twenty well-resolved doublets, exhibiting a B 10 - B 11 isotope splitting, are observed in the new spectra for S 28 i with isotopic enrichment >99.99%. Linewidths as narrow as 0.0012 cm-1 (150 neV) full width at half maximum are observed for the most highly enriched sample.

Original languageEnglish
Article number195203
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number19
Publication statusPublished - 2009 Nov 11


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Yang, A., Steger, M., Sekiguchi, T., Karaiskaj, D., Thewalt, M. L. W., Cardona, M., Itoh, K. M., Riemann, H., Abrosimov, N. V., Churbanov, M. F., Gusev, A. V., Bulanov, A. D., Kovalev, I. D., Kaliteevskii, A. K., Godisov, O. N., Becker, P., Pohl, H. J., Ager, J. W., & Haller, E. E. (2009). Single-frequency laser spectroscopy of the boron bound exciton in S 28 i. Physical Review B - Condensed Matter and Materials Physics, 80(19), [195203].