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Identification of donor species in high‐purity GaAs using optically pumped submillimeter lasers
1.T. Y. Chang and T. J. Bridges, Opt. Commun. 1, 423 (1970).
2.T. Y. Chang, T. J. Bridges, and E. G. Burkhardt, Appl. Phys. Letters 17, 249 (1970).
3.T. Y. Chang and J. D. McGee, Appl. Phys. Letters 19, 103 (1971).
4.H. R. Fetterman, H. R. Schlossberg, J. Waldman, C. D. Parker, and P. E. Tannenwald in Proceedings of the VII International Quantum Electronics Conference, Montreal, 1972 (unpublished).
5.Tentative identification of the tin donor has also been reported by J. M. Chamberlain, P. E. Simmonds, R. A. Stradling, and C. C. Bradley [in Proceedings of the Eleventh International Conference on the Physics of Semiconductors, Warsaw (unpublished)], but the donor binding energy was not determined.
6.H. R. Fetterman, D. M. Larsen, G. E. Stillman, P. E. Tannenwald, and J. Waldman, Phys. Rev. Letters 26, 975 (1971).
7.C. M. Wolfe, G. E. Stillman, and J. O. Dimmock, J. Appl. Phys. 41, 504 (1970).
8.Since the residual and in the series of runs were relatively constant (and assuming that the addition of the tin did not increase the residual ), the tin donor concentration could be determined with reasonable assurance.
9.C. M. Wolfe, G. E. Stillman, and W. T. Lindley in Proceedings of the Second International Symposium on GaAs (Institute of Physics and the Physical Society, London, 1969), p. 43.
10.Previous studies of intentionally doped GaAs were made with samples which had broad (approximately half‐width) donor absorption lines. Such linewidths do not appear to be characteristic of the spectra of isolated impurities in GaAs [C. J. Summers, R. Dingle, and D. E. Hill, Phys. Rev. B 1, 1603 (1970)].
11.G. E. Stillman, D. M. Larsen, C. M. Wolfe, and R. C. Brandt, Solid State Commun. 9, 2245 (1971).
12.The ionization energy of the donors in GaAs is increased by nonparabolicity effects which deepen the 1s state by about
13.H. R. Fetterman, J. Waldman, and C. M. Wolfe, Solid State Commun. 11, 375 (1972).
14.While the lines shown in Fig. 1 appear relatively broad in magnetic field, the “magnetic dispersion” for this transition is quite small, approximately in this region.
15.D. M. Larsen, Bull. Am. Phys. Soc. 17, 369 (1972).
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