摘要
介绍了非相干光时延四波混频(TDFWM-1L)理论的发展,分析了多能级理论与二能级理论的差异。在7.5K和300K时,利用TDFWM-1L实验观测到了Er2O3和CeO2掺杂TeO2-Nb2O5-ZnO玻璃的的光子回波信号,利用TDFWM-1L多能级理论在非均匀加宽情形下的公式拟合了带有相干拍频调制结构的实验结果,并用多能级理论对实验结果做出分析,为TDFWM-1L理论的发展提供了参考。
The development of the incoherent light time-delay four-wave mixing theory is described the difference of the two-level theory and the theory of multilevel is analysed. The photon echo signal of the Er2O3 and CeO2 doped TeO2-Nb2O5-ZnO glass is also observed by the experiment of time-delay four-wave mixing with incoherent light, with the temperatures at 7. 5K and 300K respectively. The Photon echo signal indicates the interference-beat modulation. The multi-level theory in the case of non-uniform broadening the theoretical formula is usedto fit the experimental results. The multi-level theory is used to explain the experimental results. The reference for the develop- ment of the incoherent light four-wave mixing theory is provided.
关键词
相干拍频调制
光子回波
非相干光
超快弛豫
四波混频
interference-beat modulation, photon echo, incoherent light, ultrafast relaxation, four-wave mixing
