Liquid crystal device, optical system, spatial phase modulator, and method of manufacturing liquid crystal device

A liquid-crystal-type spatial phase modulator comprising:

• a transparent solid material layer configured to receive an input of light;
• a transparent electrode layer disposed below the transparent solid material layer;
• a first alignment film layer disposed below the transparent electrode layer;
• a liquid crystal layer disposed below the first alignment film layer;
• a second alignment film layer disposed below the liquid crystal layer;
• a lower electrode layer disposed below the second alignment film layer;
• and
• a silicon substrate disposed below the lower electrode layer,
• wherein the transparent electrode layer is an indium tin oxide (ITO) transparent electrode layer,
• wherein the first alignment film layer and the second alignment film layer are inorganic alignment film layers made of silicon oxide (SiOx), and
• wherein the liquid crystal layer includes a liquid crystal composition that includes a liquid crystal mixture, to which a polymerization inhibitor for inhibiting radical polymerization caused by light action is added, and
• wherein a hindered amine based organic compound is added to the liquid crystal mixture as the polymerization inhibitor.