COHERENT PROPAGATION AND QUANTUM BEATS OF QUADRUPOLE POLARITONS IN CU2O
COHERENT PROPAGATION AND QUANTUM BEATS OF QUADRUPOLE POLARITONS IN CU2O
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DOI：
10.1103/physrevlett.67.2343
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发表时间：
1991-10-21
影响因子：
8.6
通讯作者：
VONDEROSTEN, W
中科院分区：
文献类型：
--
作者：
FROHLICH, D;KULIK, A;VONDEROSTEN, W
用时间分辨光谱法证明了四极极化子在CU2O中的相干传播。这表现为与1S激子极化子共振的皮秒光脉冲的时间形状的强烈畸变。透射光强度随时间变化的振荡被定量地解释为激子极化子两个分支之间的量子拍引起的。分析得到均匀的线宽和振子强度。
Coherent propagation of quadrupole polaritons in CU2O is demonstrated by time-resolved spectroscopy. This manifests itself in a strong distortion of the temporal shape of a picosecond optical pulse which is in resonance with the 1S exciton polariton. Oscillations with time-dependent period in the transmitted light intensity are quantitatively explained as resulting from quantum beats between the two branches of the exciton polariton. The analysis yields the homogeneous linewidth and oscillator strength.