High efficiency sub-nanosecond electro–optical Q-switched laser operating at kilohertz repetition frequency
Zhao Xin1, Song Zheng1, Li Yuan-Ji1, 2, †, Feng Jin-Xia1, 2, Zhang Kuan-Shou1, 2
       

Single pulse shapes at different values of Vhl: (a) Vhl = Vλ/4, (b) laser from OC at Vhl = 1.4Vλ/4, (c) laser from TFP at Vhl = 1.4Vλ/4, (d) combination of the laser from OC and TFP at Vhl = 1.4Vλ/4.