Near Infrared Light Amplification in Dye-Doped Polymer Waveguide
Near Infrared Light Amplification in Dye-Doped Polymer Waveguide
复制标题
染料掺杂聚合物波导中的近红外光放大
DOI：
10.1143/jjap.45.l355
复制
发表时间：
2006
影响因子：
1.5
通讯作者：
K. Oe
中科院分区：
文献类型：
--
作者：
Shuhei Fujimoto;I. Sakata;H. Yanagi;K. Yamashita;K. Oe
我们研究了光抽运下染料掺杂聚合物光波导中的近红外放大自发辐射。采用分散在聚乙烯吡咯烷酮中的碘化2-[7-(1，3-dihydro-1，3，3-trimethyl-2H-indol-2-ylidene)-1，3，5-heptatrienyl]-1，3，3-trimethyl-3H-indolium作为近红外发射染料。采用旋涂技术在玻璃基片上制备了染料掺杂聚合物光波导。根据在ASE峰值波长下的增益和损耗测量，该波导显示出很大的净增益为34.8 cm-1和低的损耗为8.4 cm-1。当染料浓度为2.0wt%时，获得了较高的增益性能，这归因于掺杂染料具有较大的有效受激发射截面。此外，由于自吸收效应，ASE的波长随着掺杂浓度的不同而在825-870 nm的范围内变化。
We have investigated near infrared amplified spontaneous emission (ASE) in dye-doped polymer waveguides under optical pumping. As a near infrared emitting dye, 2-[7-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1,3,5-heptatrienyl]-1,3,3-trimethyl-3H-indolium iodide dispersed in poly(vinylpyrrolidone) was used. Dye-doped polymer waveguides were made by spin coating on glass substrates. According to gain and loss measurements at ASE peak wavelengths, the waveguides exhibited a very large net gain of 34.8 cm-1 and a low loss of 8.4 cm-1. This high gain performance was obtained at a dye concentration of 2.0 wt %, and was attributed to a large effective stimulated emission cross section of the doped dye. Furthermore, ASE wavelengths were varied in a range of 825–870 nm by doping concentrations because of self-absorption effects.