Wetter Niklaus Ursus, Ramos de Miranda Adriana, Pecoraro Édison, Lima Ribeiro Sidney José, Jimenez-Villar Ernesto
Centro de Lasers e Aplicações, CNEN-IPEN/SP Av. Prof. Lineu Prestes 2242 São Paulo CEP 05508-000 Brazil
Instituto de Química de Araraquara, Universidade Estadual Paulista Júlio de Mesquita Filho Rua Prof. Francisco Degni 55 Araraquara São Paulo CEP 14800-900 Brazil.
RSC Adv. 2018 Aug 21;8(52):29678-29685. doi: 10.1039/c8ra04561e. eCollection 2018 Aug 20.
Silica aerogel is a lightweight material, well known for its good mechanical and thermal characteristics, but its optical properties have received less attention, because it is weakly scattering. Here we present for the first time the lasing properties and their complex dynamics of silica aerogel doped with R6G. It is shown that the factors of the lasing modes determine the operation of the laser, being either resonant or ASE-lasing. For resonant lasing, the number of resonators is easily varied and the number of modes in a single resonator and their emission frequency can be dynamically adjusted, making this a truly versatile photonics material.
二氧化硅气凝胶是一种轻质材料，以其良好的机械和热特性而闻名，但其光学特性却较少受到关注，因为它的散射较弱。在此，我们首次展示了掺杂R6G的二氧化硅气凝胶的激光特性及其复杂动力学。结果表明，激光模式的因素决定了激光器的运行，其运行方式为共振或受激辐射放大（ASE）激光。对于共振激光，谐振器的数量易于改变，单个谐振器中的模式数量及其发射频率可以动态调整，这使其成为一种真正通用的光子学材料。
