Nice! I worked on something similar as an undergrad project years ago, setting up beams with different orbital angular momentum characteristics. Was a lot fun working in the lab. Sadly I didn’t have the focus/grit to finish writing a paper (sorry Dr. Singh). Side note, this was in 2007 and the folks in our optics lab would check the location of beams by grabbing from the stacks of ancient punchcards lying around and waving them next to the apparatus.
This paper has a pretty similar setup, but adds a spatial light modulator (like a DLP projector that can control phase as well as brightness).
What is wild to me is that the researchers here are able to create a beam where the angular moment changes as you move away.
An approach we've done is to use Postgres' "create database foo2 template foo1" syntax to essentially snapshot the db under test at various points and use those to rollback as needed.
If your table setup process starts to get slow like ours, checkout psql TEMPLATE (https://www.postgresql.org/docs/current/manage-ag-templatedb...). Do the setup once to a db with known name, then use it as the template when creating the db for each test.
I snagged one of those keyboards at an auction. Haven't been able to get it to work with a modern PC. Hard to find much info on this line of computers.
This paper has a pretty similar setup, but adds a spatial light modulator (like a DLP projector that can control phase as well as brightness).
What is wild to me is that the researchers here are able to create a beam where the angular moment changes as you move away.
Plus the really cool spiral patterns.
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