Abstract

Diamonds are wide-gap semiconductors possessing excellent physical and chemical properties; thus, they are regarded as very appropriate materials for optoelectronic devices. Based on the Kerr effect, we introduce a simple and feasible method for measuring the third-order nonlinear optical susceptibility of synthetic diamonds. In the experiments, synthetic type I diamond samples and transverse electro-optic modulation systems are utilized. As for the laser with the wavelength of 650 nm, the third-order susceptibility and Kerr coefficient of the diamond samples are obtained at ?<sup>(3)</sup><sub>1212</sub>=2:17×10<sup>-23</sup> m<sup>2</sup>=V<sup>2</sup> and S<sub>44</sub>= 1.93×10<sup>-23</sup> m<sup>2</sup>=V<sup>2</sup>, respectively.

© 2010 Chinese Optics Letters

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