Generation of Rabi-frequency radiation using exciton-polaritons
Generation of Rabi-frequency radiation using exciton-polaritons
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使用激子极化子产生拉比频率辐射
DOI：
10.1103/physreva.92.033828
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发表时间：
2015
影响因子：
2.9
通讯作者：
Barachati F
中科院分区：
文献类型：
--
作者：
Barachati F
我们研究了在半导体微腔中使用激子极化子，通过利用上极化子分支和下极化子分支之间的跃迁来产生跨越红外到太赫兹光谱区域的辐射。该过程类似于差频生成 (DFG)，依赖于使用具有非零二阶磁化率的半导体。对于由非线性光学聚合物组成的有机微腔，当满足基本腔模式的三重共振时，我们预测与裸非线性聚合物薄膜相比，DFG 辐照度会增强。在由 (111) GaAs 组成的无机微腔的情况下，与裸 GaAs 板相比，发现了增强。由于极化子模式的高模式重叠，两种结构都表现出高波长可调性和宽松的设计约束。
We study the use of exciton-polaritons in semiconductor microcavities to generate radiation spanning the infrared to terahertz regions of the spectrum by exploiting transitions between upper and lower polariton branches. The process, which is analogous to difference-frequency generation (DFG), relies on the use of semiconductors with a nonvanishing second-order susceptibility. For an organic microcavity composed of a nonlinear optical polymer, we predict a DFG irradiance enhancement of, as compared to a bare nonlinear polymer film, when triple resonance with the fundamental cavity mode is satisfied. In the case of an inorganic microcavity composed of (111) GaAs, an enhancement ofis found, as compared to a bare GaAs slab. Both structures show high wavelength tunability and relaxed design constraints due to the high modal overlap of polariton modes.