The Effect of Pressure and Temperature on the Third Harmonic Generation of Cubical Quantum Dot Under External Electric Field

Low dimensional systems are structures in which the charge carriers are confined in nanoscale. The structures that the movements of charge carriers are restricted in three dimensions are known as quantum dot and these structures play important role in application of molecular biology, medical imaging, storage of data, application devices such as optics and communication. In this study, the effects of pressure and temperature on the third harmonic generation of cubic quant？m dot under external electric field theoretically have been investigated. Numerical calculations have been done within the effective-mass approximation. The energy eigenvalues of the ground state and excited states of the structure have been calculated and the obtained these values have been used in calculation of optical properties. Also,the effects of size of cubical quantum dot and the relaxation rate have been investigated. Results show that the pressure and temperature has a great influence on third harmonic generation