Dispersion of the Lowest-Order Optical Nonlinearity in InSb

Abstract

remains the same.After mechanically damaging a sample we also observe a shift of the peak to larger fields. Just as in the irradiation experiments, the temperature dependence shows an increase in the intercept A without a change in B.(8) Other metals. -Experiments in Bi, Ga, and K would seem to fit the Cu story, and we suggest that the effects observed in Refs. 3-5 are due to the same mechanism. We have examined such data to find that Eq. (4) also gives reasonable agreement with observed field values.In conclusion, we would like to acknowledge the many useful discussions we have had with E. A. Kaner, H. J. Fischbeck, A. B. Pippard, and M. Ya. Azbel\ In particular, M. Ya. Azbel' has pointed out to us that the contribution to dZ/dH of surface electrons should diverge as Second-harmonic generation (SHG) has been directly measured in InSb as a function of photon energy for second-harmonic (SH) photon energies near the fundamental band-gap energy. The ex-

Non-linear optical properties of condensed matter

“…Since they possess a statistical centre of symmetry these effects begin by the third-order ones. They were observed for the first time by Pate1 et aZ(1966) and then in a number of elemental, binary and ternary semiconductors (Wynne and Boyd 1968, Wynne 1969, Wang and Ressler 1969, Chemla et a1 1974b. The theory of these effects was elaborated by Wolf and Pearson (1966), Kaw (1968), Jha and Bloembergen (1968a), Wang and Ressler (1969), Rustagi and Jha (1969) and Rustagi (1970).…”

Mid-Infrared Nonlinear Optical Materials Based on Metal Chalcogenides: Structure–Property Relationship

“…(i) Since Kleinman symmetry is based on the assumption of dispersionless medium, the presence of dispersion can damage its validity, leading to a weak SHG response, such as in α-TeO 2 . (ii) The electronic exciton resonance in which the double frequency is close to the absorption edge can significantly enhance the SHG effect, leading to strong deviations of Kleinman symmetry. , However, these two reasons are not suitable to explain the La 4 InSbS 9 case. Instead, the ab initio molecular dynamics simulations under 300 K were performed .…”

“…116 (ii) The electronic exciton resonance in which the double frequency is close to the absorption edge can significantly enhance the SHG effect, leading to strong deviations of Kleinman symmetry. 117,118 However, these two reasons are not suitable to explain the La 4 InSbS 9 case. Instead, the ab initio molecular dynamics simulations under 300 K were performed.…”