On frequency multiplication in the millimeter range inn-InSb

An experimental investigation was made of the generation of the third harmonic in n-InSb at a temperature 77K in the millimeter range of wavelengths. The results are compared with a theoretical calculation on the assumption that the nonlinear susceptibility is caused by the nonparabolicity of the conduction bands.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 15, No. 2, pp. 300–304, February, 1972.In conclusion the authors sincerely thank A. M. Belantsev and V. N. Genkin for discussing the results of the work and for a number of valuable comments.