Search results
Results From The WOW.Com Content Network
Theodore Harold Maiman (July 11, 1927 – May 5, 2007) was an American engineer and physicist who is widely credited with the invention of the laser. [1] [2] [3] [4 ...
The first working laser was a ruby laser made by Theodore H. "Ted" Maiman at Hughes Research Laboratories on May 16, 1960. [ 1 ] [ 2 ] Ruby lasers produce pulses of coherent visible light at a wavelength of 694.3 nm , which is a deep red color.
For example, the first working laser was a ruby laser, made from ruby (chromium-doped corundum). The population inversion is maintained in the dopant. These materials are pumped optically using a shorter wavelength than the lasing wavelength, often from a flash tube or another laser.
Even though Gould had signed away eighty percent of the proceeds to finance his court costs, he made several million dollars. [34] "I thought that he legitimately had a right to the notion to making a laser amplifier", said William R. Bennett, who was a member of the team that built the first laser that could fire continuously. "He was able to ...
The laser is typically an aluminium gallium arsenide (AlGaAs) semiconductor laser), which emits red or infrared light. The drum is coated with selenium, or more recently, with an organic photoconductor made of N-vinylcarbazole, an organic monomer. There are typically seven steps involved in the process, detailed in the sections below.
The gas laser was the first continuous-light laser and the first laser to operate on the principle of converting electrical energy to a laser light output. The first gas laser, the Helium–neon laser (HeNe), was co-invented by Iranian engineer and scientist Ali Javan and American physicist William R. Bennett, Jr., in 1960. It produced a ...
The first test of two-way laser communication occurred in December 2021 when NASA’s Laser Communications Relay Demonstration launched and went into orbit about 22,000 miles (35,406 kilometers ...
Laser science or laser physics is a branch of optics that describes the theory and practice of lasers. [ 1 ] Laser science is principally concerned with quantum electronics , laser construction , optical cavity design, the physics of producing a population inversion in laser media , and the temporal evolution of the light field in the laser.