Influence of low temperature on the surface deformation of deformable mirrors

You Juncheng^{1, 2, 3}, Guan Chunlin^{1, 2, †}, Zhou Hong^{1, 2}

(color online) (a) Thermal force in the base. (b) PV of base surface deformation of optimized ULE DM with optical head of different heights in 150 mm diameter at different temperatures.