https://www.bis.doc.gov/index.php/documents/regulations-docs/2338-ccl6-6/file https://www.bis.doc.gov/index.php/documents/regulations-docs... The main section

https://www.bis.doc.gov/index.php/documents/regulations-docs/2338-ccl6-6/file https://www.bis.doc.gov/index.php/documents/regulations-docs... The main section on lasers starts on page 47. The rules are very complicated. See 6A995 d and f. Lasers are also covered in other sections like 6A205. (I'm amused by Raman shifters being covered-- they're literally just pressurized tubes with hydrogen and mirrors at the end-- I can't imagine anyone qualified to use one couldn't have one fabricated pretty much anywhere).