2022/11/29 by Rodrigo F. da Silva, da Silva, Rodrigo F., Daniel F. Luz +13
Engineering · Materials Science · Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Luminescence Properties of Advanced Materials #Optics (physics.optics) #Photorefractive and Nonlinear Optics #Solid State Laser Technologies
paper · pdf · doi:10.48550/arxiv.2211.15854
openalex publication_date 2022/11/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
We investigate the role of the Nd3+ content on the PA characteristics in NdxY1.00-xAl3(BO3)4 particles with x ranging from 0.05 to 1.00. It is known that the replacement of Y3 by Nd3+ into the YAl3(BO3)4 crystalline structure can introduce strong modifications of the lattice properties as well as in the photoluminescence characteristics, such as luminescence concentration quenching and broadening of spectral lines. Despite that, we observe, for low x (<= 0.20) an energy-looping preceding the PA-like that ensues for x >= 0.40. It is associated to the proximity among the Nd3+ ions, fundamental to the electric dipole-electric dipole interaction responsible for the Nd3+ energy transfer [4F3/2, 4I9/2] - [4I15/2, 4I15/2]. We discuss the present results focusing on emerging technologies with development of ultra-sensitive thermal sensors, and super-resolution imaging thanks to the giant nonlinearities in the input-output power dependences.