Probably like this.[1]
It's a variant on a liquid crystal display, set up to adjust phase, rather than intensity. Clever. Price around US$13,000 and up.
[1] https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=10...
It's a variant on a liquid crystal display, set up to adjust phase, rather than intensity. Clever. Price around US$13,000 and up.
[1] https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=10...