Laser & Optoelectronics Progress, Volume. 60, Issue 11, 1106028(2023)
Polarized Luminescence of Sm3+-Doped Single NaYF4 and BiPO4 Microcrystals
In this paper, the polarized luminescence of single hexagonal NaYF4∶Sm3+ and monoclinic BiPO4∶Sm3+ microcrystals are measured by using high-precision single-particle polarization-resolved spectroscopy. Experimental results are analyzed by applying Poincare? sphere and polarization fitting methods, which show that the emissions from Sm3+ ions in hexagonal and monoclinic microcrystals are partially polarized. However, the linear polarization angles of emissions from hexagonal microcrystals are completely parallel and perpendicular to the crystalline c-axis, whereas the angles of monoclinic microcrystals are not. From the perspectives of point group theory and macroscopic crystal symmetry, the orthogonally linear polarization angles of hexagonal microcrystals are due to the rotational symmetry of optical transition dipoles around the c-axis. However, the transition dipoles in the monoclinic phase do not allow rotational symmetry, resulting in the random linear polarization angles of the emissions. This finding will facilitate the achievement of rare-earth-ion-doped single micro/nanocrystals with desirable polarization properties originating from their crystal structure design.
Get Citation
Copy Citation Text
Xin Yue, Ruyan Ye, Yaxin Guo, Peng Li, Feng Li. Polarized Luminescence of Sm3+-Doped Single NaYF4 and BiPO4 Microcrystals[J]. Laser & Optoelectronics Progress, 2023, 60(11): 1106028
Category: Fiber Optics and Optical Communications
Received: Apr. 3, 2023
Accepted: Apr. 26, 2023
Published Online: Jun. 7, 2023
The Author Email: Li Peng (ponylee@stu.xjtu.edu.cn), Li Feng (felix831204@xjtu.edu.cn)