New Progress on Adaptive Optics in Inertial Confinement Fusion Facility

Measurement method of the misalignment between the Hartmann–Shack sensor and the deformable mirror in an adaptive optics system

“…We simulate the process which uses the HSWFS to measure the DM surface after applying voltages onto each actuator. The center coordinate of each actuator is calculated from equations (10), and then we compare it with its theoretical value which has been designed beforehand according to the requirement of the practical adaptive optics system [8]. The theoretical and calculated positions of 45 actuators are plotted in figures 4(a) and (b), and their residual error is presented in figure 4(c).…”

“…In most traditional AO systems, as we know, the alignment is implemented manually, and the accuracy and efficiency are limited [5]. For example, in the AO system which was used at the SG-III inertial confinement fusion (ICF) facility of China [6][7][8][9], the matching position between the HSWFS and the DM must be changed whenever the dynamical beam path is collimated. Furthermore, the ICF facility is made up of a number of optical beams to ensure enough energy at the ignition target.…”