TY - JOUR T1 - Intense laser field effect on second harmonic generation in a strained InGaN/AlGaN quantum well TT - اثر تابش لیزری قوی بر روی تولید هارمونیک دوم در چاه کوانتومی کرنشی InGaN/AlGaN JF - opsi JO - opsi VL - 21 IS - 0 UR - http://opsi.ir/article-1-682-en.html Y1 - 2015 SP - 677 EP - 680 KW - Intense laser field KW - Second harmonic generation KW - Strained quantum well. N2 - In this paper, the second harmonic generation coefficient in a strained InGaN/AlGaN quantum well are studied. Impacts of the spontaneous and piezoelectric polarization fields on the confinement potential are taken into account. The energy levels and wave functions are calculated using the fourth-order Runge-kutta method and optical properties are obtained using the compact density matrix approach. Results reveal that the confinement potential is considerably affected by the laser field and internal electric field. Results also indicate that the resonant peaks experience a red-shift with increasing the laser field strength. Moreover, the resonant peaks suffer a blue shift with the increase in In and Al compositions. M3 ER -