TEA laser is a new term for me. It resembles the Nitrogen UV laser I have wanted to build since I was a teenager and found the article in Scientific American's "Amateur Scientist" column.

"An Unusual kind of gas laser that puts out pulses in the ultraviolet" Scientific American, Amateur Scientist (June 1974)

This guy references it with regard to his TEA laser as well:

https://www.cornellcollege.edu/physics-and-engineering/pdfs/...