Han Xiahui, Xia Kegui, Li Guiyun, Li Jianlang. 3.2 ns High Peak Power Radially Polarized Pulsed Output from Passively Q-Switched Microchip Laser with Composite Structure of YAG/Nd∶YAG/Cr4+∶YAG Crystal[J]. Chinese Journal of Lasers, 2015, 42(7): 702010