掺钕纳米晶体随机激光器中的非线性效应与光子相变

Nonlinear effects and photonic phase transitions in Nd-doped nanocrystal-based random lasers.

作者信息

Moura André L, Carreño Sandra J, Pincheira Pablo I R, Maia Lauro J Q, Jerez Vladimir, Raposo Ernesto P, Gomes Anderson S L, de Araújo Cid B

出版信息

Appl Opt. 2020 May 1;59(13):D155-D162. doi: 10.1364/AO.383477.

DOI:10.1364/AO.383477

PMID:32400638

Abstract

The interplay between gain and scattering of light propagating in disordered media allows operation of random lasers (RLs)-lasers without conventional optical cavities. In the present paper, we review our recent contributions in this area, which include the demonstration of self-second-harmonic and self-sum-frequency generation, the characterization of Lévy's statistics of the output intensity fluctuations, and replica symmetry breaking (analogue to the spin-glass phase transition) by RLs based on nanocrystals containing trivalent neodymium ions.

摘要

在无序介质中传播的光的增益与散射之间的相互作用使得随机激光器（RLs）得以运行，这种激光器没有传统的光学腔。在本文中，我们回顾了我们近期在该领域的贡献，其中包括自二次谐波和自和频产生的演示、输出强度涨落的 Lévy 统计特性的表征，以及基于含有三价钕离子的纳米晶体的随机激光器所实现的 replica 对称性破缺（类似于自旋玻璃相变）。