They do have kits:
https://www.thorlabs.com/navigation.cfm?guide_id=2310Thorlabs' educational line of products aims to promote physics, optics, and photonics by covering many classic experiments, as well as emerging fields of research.
They do have laser diode tutorials:
https://www.thorlabs.com/newgrouppage9. ... up_id=1832
And other technical publications:
And they offer a book, "Fundamentals of Biomedical Optics!"
About the company:
https://www.thorlabs.com/index.cfmThorlabs specializes in the building blocks for laser and fiber optic systems. From optomechanical components to telecom test instrumentation.
This is more information on a topic than most people might want to know.