Wavefront formation using modal liquid-crystal correctors

Results of experiments on wavefront formation using multichannel modal correctors in an adaptive optical system with feedback are reported. Two types of correctors, one based on a glass substrate with a high-resistance layer deposited onto it and the other based on a high-permittivity ceramic substrate, are developed and investigated. The results show that it is expedient to use the correctors in applications that do not require a high speed of response.