Stimulated resonance Raman scattering from dye-doped polymer waveguides
Stimulated resonance Raman scattering from dye-doped polymer waveguides
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DOI：
10.1063/1.2203509
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发表时间：
2006-05
影响因子：
4
通讯作者：
I. Sakata;Shuhei Fujimoto;H. Yanagi
中科院分区：
文献类型：
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作者：
I. Sakata;Shuhei Fujimoto;H. Yanagi
研究了染料掺杂聚合物薄膜光波导的受激共振拉曼散射。将1，4-双[2-[N，N-二（对甲苯基）氨基]苯基]乙烯基]苯（DADSB）用作掺杂在聚（乙烯基吡咯烷酮）（PVP）的旋涂膜中的染料。在DADSB吸收边的光抽运下，仅在出现放大自发辐射（ASE）带的光谱区观察到一条很窄的谱线（半高宽约为0.5nm）。这条发射线归属于SRRS，其拉曼位移为1600 cm −1。SRRS的阈值激发能高于ASE，但斜率效率高于ASE。偏振相关的强度表明，SRRS是由薄膜波导中的横电模式传播的ASE相同。
We have investigated stimulated resonance Raman scattering (SRRS) from dye-doped polymer thin film waveguides. 1,4-bis[2-[N,N-di(p-totyl)amino]phenyl]vinyl]benzene (DADSB) was used as a dye doped in a spin-coated film of poly(vinyl-pyrrolidone) (PVP). Under optical pumping at the absorption edge of DADSB, a very narrow line (full width at half maximum ∼0.5nm) was observed only in the spectral region where the amplified spontaneous emission (ASE) band appeared. This emission line was assigned to SRRS with a Raman shift of 1600cm−1. The threshold excitation energy for this SRRS is higher than that of the ASE, but the slope efficiency of the SRRS was higher than that of the ASE. The polarization-dependent intensity revealed that the SRRS was propagated by the transverse electric mode in the thin film waveguide as same as the ASE.