Up-conversion luminescence polarization control in Er3+-doped NaYF4 nanocrystals
Zhang Hui1, Yao Yun-Hua2, Zhang Shi-An2, †, , Lu Chen-Hui3, Sun Zhen-Rong2
       

Schematic diagram of experimental arrangement for polarization control of UC luminescence in Er3+-doped NaYF4 nanocrystals. Here, M1 and M3 are removable mirrors, which are used to switch the 1-kHz femtosecond laser amplifier and 80-MHz femtosecond laser oscillator.