Simulation of high energy intersubbands optical absorption coefficients in a polymeric capped spherical quantum dot

For the first time, the various optical properties of polymeric capped spherical quantum dots such as, the oscillator strength, linear, third order nonlinear, and total optical absorption coefficients for the transition between intersubbands 1s–1p, 1p–1d, 1d–1f, 1f–1g, 1g–1h, 1h–1i, 1i–1j, 1j–1k, and 1k–1l are reported. In this regard, within the framework of effective-mass approximation, the electronic structure of the system is studied, and by means of the full numeric imaginary time propagation technique the charge density, the potential profile, the wavefunctions, and the corresponding energy states for zinc sulfide spherical quantum dot which is embedded in the polymeric media are calculated self-consistently. Calculated results show that the oscillator strength and the magnitude of optical absorption coefficients are enhanced for transition between intersubbands with higher energies. Also, calculations show that the total absorption coefficient depends on the strength of incident optical intensity and relaxation time.