Robert Hall invented the first semiconducter laser for CD players :)
In 1962 robert hall invented semiconductor laser later used in CD players.
Semiconductor laser later used in CD players
Semiconductor laser
construction and working of semiconductor laser
IBM are invented the first laser keyboard.
A semiconductor laser is a type of laser which utilizes a semiconductor as its Photon source, rather than a gas (Argon, CO2, Etc...) laser which uses inert gas as an active medium. Many physicists and engineers consider a semiconductor laser a type of "Solid-State" or "Two-State" LASER.
Semiconductor lasers are made with laser diodes, with added circuitry to measure and regulate the diode current/output.
LASER is Light amplification by stimulated emission of radiation. As far as I have understood, Solid State laser is a macroscopic form of diode laser. Thus a small semiconductor diode is similar to a solid state laser except for the mechanism of lasing and size.
American physicist Theodore Maiman constructed the first working laser in 1960.But research started in 1958
American physicist Theodore Maiman constructed the first working laser in 1960. But research started in 1958
yes
1960- this was the first working laser, but it had been a theory since 1917.