The first working example of a maser was produced in 1953 by Charles Townes, James P. Gordon, and H.J. Zieger.
Townes and Aurthur Schawlow created the concept of a maser that produced radiation in the visible spectrum in 1957
filed a patent application for their idea
their patent was granted, and they built the first working model.
The ruby laser was the first, working, solid-state laser. It was created by Theodore H. Maiman in May of 1960.
for treating chronic neck pain, lower-back pain, other musculoskeletal injuries, skin conditions, small wounds, hair loss, hair growth, and breast cancer.