Abstract
In this paper the author has analytically investigated the use of dc electric fields of arbitrary strength, for the generation of second harmonics of high-frequency electromagnetic waves in a nondegenerate semiconductor. Boltzmann equation techniques have been employed to describe the motion of free carriers inside the semiconductor; the only form of carrier scattering considered is acoustic phonon scattering. The curve of second-harmonic intensity vs dc field exhibits a maximum, thus illustrating that there is an optimum value of the dc field for which the generation can be most efficient.