The invention of the laser can be dated to 1958 with the publication of the scientific paper “Infrared and Optical Masers” by Arthur L. Schawlow, then a Bell Labs researcher, and Charles H. Townes, then a consultant to Bell Labs. That paper, published in Physical Review, a journal of the American Physical Society, opened the door to a … More In Memoriam: Charles Hard Townes, Inventor of the “Maser” – 1915-2015