Second harmonic generation from Si[sub m]Ge[sub n] superlattices

Bottomley, D.J.; Lupke, G.; Ledgerwood, M.L.; Zhou, X.Q.; van Driel, H.M.
October 1993
Applied Physics Letters;10/25/1993, Vol. 63 Issue 17, p2324
Academic Journal
Investigates the second harmonic generation (SHG) from Si[sub m]Ge[sub n] strained layer superlattices (SLS). Details on the SHG signals of odd-odd, even-even and even-odd specimens for a 775 nanometer fundamental beam; Lack of a large bulk dipole-allowed signal in odd-odd SLS; Advantage of SLS grown on vicinal silicon (001) substrates with biatomic steps.


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