摘要:
   The gravitational lensing is a widely used probe in study the dark universe. Besides the gravity, the free electrons in the plasma can also cause deflections of the light. Although plasma lensing has a distinct similarity to gravitational lensing, particularly in its mathematical description, plasma lensing introduces additional features, such as wavelength dependence, diverging deflection etc. I will briefly introduce the basic phenomenon of plasma lensing and the lensing effects, such as the magnification and time delay in the plasma lensing. It shows some potential interesting applications in the study of pulsar, FRB as well as the interstellar and intergalactic medium. Moreover, for the gravitational lensed radio sources, we need to consider plasma deflection as well. For example, the lensed FRBs can also provide us some interesting results.