The development of lasers traces back to a 1916 concept proposed by Albert Einstein, which outlined the possibility of atoms releasing energy as light. Initial advancements came in the 1950s, with Charles H. Townes creating the first microwave laser, or maser, and subsequently collaborating with Arthur L. Schawlow on the “optical maser,” which laid the groundwork for lasers. Although there was contention over the invention’s credit, with Gordon Gould coining the term “laser,” the first successful laser was built by Theodore H. Maiman in 1960 using ruby. The technology later evolved rapidly, finding significant applications in various fields such as medicine, manufacturing, and data processing. Today, lasers are indispensable tools used in numerous industries, from surgery and holography to advanced scientific research, highlighting their vast potential and versatility.