Laser-induced nonlinear optical rectification in a two-dimensional quantum pseudodot system

- Effects of intense laser field on a two-dimensional quantum pseudodot system are investigated.
- The structure of confinement potential is significantly altered by the intense laser field.
- Intense laser field affects remarkably the nonlinear optical rectification coefficient.
- External fields cause a shift in the resonance peak of the nonlinear optical rectification.

In this work, the effects of intense laser field on the nonlinear optical rectification in a two-dimensional quantum pseudodot system subjected to an uniform external magnetic field have been investigated theoretically. The non-resonant monochromatic intense laser field with circular polarization has been taken into account within the framework of high-frequency Floquet theory. Analytical expression for the coefficient of nonlinear optical rectification is deduced by using the compact-density matrix approach and iterative method. Numerical results show that the nonlinear optical rectification coefficient depends strongly on the magnitude of magnetic field, the chemical potential and zero point of the pseudoharmonic potential. Moreover, we have demonstrated that the strength of intense laser field alters the structure of confinement potential and affects remarkably the nonlinear optical rectification coefficients.