TY - JOUR T1 - Impact of unpumped regions within active element on operation of a diode pumped Er-Yb:Glass laser Q-switched with Co2+:MgAl2O4 saturable absorber TT - تأثیر نواحی پمپ نشده محیط‌فعال بر عملکرد یک لیزردمش دیودی Er-Yb:Glass کلیدزنیQ شده با جاذب اشباع‌پذیرCo2+:MgAl2O4 JF - opsi JO - opsi VL - 23 IS - 0 UR - http://opsi.ir/article-1-1414-en.html Y1 - 2017 SP - 925 EP - 928 KW - Er-Yb:Glass laser KW - Passive Q-switch KW - Co2+:MgAl2O4 crystal KW - Rate equation N2 - Abstract- In this paper, The behavior of an Er-Yb:Glass laser Q-switched with Co2+:MgAl2O4 saturable absorber is modeled by using the rate equations. This model investigated once in presence of percentage of unpumped active element and once again in presence of completely pumped active element. After analyzing the rate equations, the output pulse width and energy are calculated and finally two cases are compared to each other. The results show that the time of propagation laser pulse in presence of unpumped active element occures later in compare with completely pumped active element. M3 ER -