The research on isoplanatic area of double conjugate adaptive optics

In this paper, based on the research of isoplanatic angle, we introduce the diameter of isoplanatic region. We further make analysis of the advantage of double conjugate Adaptive Optics (DCAO) compared to conventional adaptive optics in the aspect of isoplanatic area. Compared to isoplanatic angle and the isoplanatic angle gain, the diameter gain of isoplanatic region is more accurate to reveal the advantage of DCAO comparing with traditional AO in the aspect of isoplanatic area. Moreover, we found that the diameter gain of isoplanatic region is relative with the intensity and vertical distribution of the atmospheric turbulence by simulating the diameter gain of isoplanatic region. We can not obtain the conclusion by simulating the isoplanatic angle gain.