Detection of Gain Enhancement in Laser-Induced Fluorescence of Rhodamine B Lasing Dye by Silicon Dioxide Nanostructures-Coated Cavity

• 来源期刊: 光子传感器（英文版）
• 关键词: Silicon dioxide nanostructures gain enhancement rhodamine B dye
• 年，卷（期）: 2018,（1）
• 页码范围: 80-87
• 页数: 8页
• 语种: 英文
• DOI: 10.1007/s13320-017-0462-9

摘要

In this work,nanostructured silicon dioxide films are deposited by closed-field unbalanced direct-current (DC) reactive magnetron sputtering technique on two sides of quartz cells containing rhodamine B dye dissolved in ethanol with 10-5 M concentration as a random gain medium.The preparation conditions are optimized to prepare highly pure SiO2 nanostructures with a minimum particle size of about 20nm.The effect of SiO2 films as external cavity for the random gain medium is determined by the laser-induced fluorescence of this medium,and an increase of about 200％ in intensity is observed after the deposition of nanostructured SiO2 thin films on two sides of the dye cell.