Praseodymium-ion-doped gain materials have the superiority of lasing at various visible wavelengths directly. Simple and compact visible lasers are booming with the development of blue laser diodes in recent years. In this Letter, we demonstrate the watt-level red laser with a single blue laser diode and Pr:YLiF4 crystal. On this basis, the passively
Yuxia Zhang, Yilun Yang, Lianhan Zhang, Dazhi Lu, Min Xu, Yin Hang, Shishen Yan, Haohai Yu, Huaijin Zhang. Watt-level continuous-wave and passively Q -switched red lasers pumped by a single blue laser diode[J]. Chinese Optics Letters, 2019, 17(7): 071402