2024-02-152024-02-152016CARREÑO, Sandra J. M. et al. Interplay between random laser performance and self-frequency conversions in NdxY1.00−xAl3(BO3)4 nanocrystals powders. Optical Materials, Amsterdam, v. 54, p. 262-268, 2016. DOI: 10.1016/j.optmat.2016.02.047. Disponível em: https://www.sciencedirect.com/science/article/pii/S0925346716301070. Acesso em: 7 jan. 2024.0925-3467e- 1873-1252https://www.sciencedirect.com/science/article/pii/S0925346716301070http://repositorio.bc.ufg.br//handle/ri/24346Random Laser emission at 1.06 μm, self-second-harmonic generation at 0.53 μm and self-sum-frequency generation at 0.46 μm were investigated in NdxY1.00−xAl3(BO3)4 nanocrystalline powders, for 0.05 ⩽ x ⩽ 1.00, excited by a pulsed laser operating at 808 nm, focusing on the interplay between the RL performance and the second-order nonlinear processes. The RL performance, characterized by a figure-of-merit relating the laser slope efficiency and the excitation pulse energy threshold, improved as x increased up to 1.00 while the efficiency of the self-frequency conversion processes reduced for increasing x because of distortions introduced in the crystalline structure of the grains. The RL wavelength was also dependent on the Nd3+ concentration and presented a redshift from 1061.9 nm to 1063.5 nm for increasing values of x.engAcesso RestritoRandom laserLaser materialsSelf-frequency conversionsSecond-harmonic generationSum-frequency generationArtigo10.1016/j.optmat.2016.02.047