Abstract
Because of the structure and then arrangement of Boron and Nitrogen atoms in the cylindrical form of Boron Nitride nanotubes, their optical properties strongly depend on the polarization direction of the incident light. The challenge of describing the optical properties of Boron Nitride nanotubes is mainly related to the calculation of dipole matrix elements. In this paper analytic expressions for the electric dipole matrix elements of single wall Boron Nitride nanotubes with arbitrary chirality for light polarized parallel and perpendicular to the nanotube axis have been obtained and then used to investigate the linear susceptibility of Boron Nitride nanotubes, semi-analytically.
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