An external frequency doubling electro-optically Q-switched Nd:YAG 473 nm blue laser was demonstrated. With absorbed pump energy of 48 mJ at 100 Hz repetition rate, about 2 mJ of 473nm blue laser pulse energy was achieved by cascade frequency doubling. The second harmonic conversion efficiency was 64.5% and overall optical-optical efficiency was 4.2%, respectively. The blue laser pulse width was less than 10ns and beam quality factor was less than 2.4.

Lu Tingting, Ma Jian, Zhu Xiaolei, Chen Weibiao. Highly efficient electro-optically Q-switched 473 nm blue laser[J]. Chinese Optics Letters, 2019, 17(5): .  复制并引用该论文