Theodore Maiman is credited with the invention of the laser. He built the first working laser in 1960 at Hughes Research Laboratories in Malibu, California. The laser was a ruby laser, and it emitted red light at a wavelength of 694 nanometers.
Denis Papin was a French physicist and inventor who is credited with the invention of the pressure cooker in 1679. He also invented the vacuum pump and the hydraulic press.
William Morton was an American dentist who is credited with the discovery of ether as an anesthetic in 1846. He used ether to perform the first painless surgery in history.
Francis Crick was a British molecular biologist who is credited with the discovery of the double helix structure of DNA in 1953. He shared the Nobel Prize in Physiology or Medicine with James D. Watson and Maurice Wilkins in 1962.
Therefore, the answer is Theodore Maiman.