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Abstract

With the aim of developing a powerful new CW source at 1THz for studies of alpha particles in thermonuclear plasmas, we investigate the third harmonic generation efficiency in semiconductors. Two Monte Carlo codes have been developed in order to predict the harmonic generation of a sample placed in an oscillating electric field. The first one is used for elemental crystals and the second one for semiconductors of the compound A3B5. Experimental studies have also been performed at 9.43 GHz. In this paper we point out the enhancement of more than two orders of magnitude of the third harmonic efficiency by cooling the semiconductor down to liquid nitrogen temperature. An efficiency maximum depending on the electric field amplitude is also clearly identified. A comparison between the experiments and the simulation shows that the Monte Carlo simulations are able to predict the maximum efficiency as well as the improvement of the third harmonic generation by decreasing the temperature.

Additional information

Authors: MOREAU P, Centre de Recherches en Physique des Plasmas, Association Euratom - Confédération Suisse, Lausanne (CH);SIEGRIST M R, Centre de Recherches en Physique des Plasmas, Association Euratom - Confédération Suisse, Lausanne (CH);BRAZIS R, Semiconductor Physics Institute, Vilnius (LT);RAGUOTIS R, Semiconductor Physics Institute, Vilnius (LT)
Bibliographic Reference: An article published in: Materials Science Forum, Volumes 297-298, (1999), pp. 315-318.
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