I. Tsimperidis

Gregorkiewicz, T., Thao, D. T. X., Tsimperidis, I., Bekman, H., Langerak, C., Michel, J., & Kimerling, L. C. (1998). Excitation mechanism of Er in Si studied with a free-electron laser. Journal of Luminescence, 80, 291-295. https://doi.org/10.1016/s0022-2313(98)00114-8 (Original work published 2025)

Tsimperidis, I., Gregorkiewicz, T., Bekman, H., & Langerak, C. (1998). Direct observation of the two-stage excitation mechanism of Er in Si. Physical Review Letters, 81, 4748-4751. https://doi.org/10.1103/PhysRevLett.81.4748 (Original work published)