Lasers are used in a wide range of applications, including laser marking, laser welding, laser cutting, fiber optic communications, laser ranging, LIDAR, laser weapons, laser records, laser vision correction, laser beauty, laser scanning, laser mosquito killers, LIF non-destructive testing technology and so on. Laser systems can be categorized into continuous wave lasers and pulsed lasers.
Laser is the 20th century after nuclear energy, computers, semiconductors, another major invention of mankind, known as "the fastest knife", "the most accurate ruler", "the brightest light It has been called "the fastest knife", "the most accurate ruler" and "the brightest light". The full name of laser in English has fully expressed the main process of manufacturing laser. The principle of laser was discovered by the famous American physicist Albert Einstein as early as 1916.
Extended information:
FIRST CAPTURE
On January 27, 2015, New Scientist reported that the first capture of an electron using a light source that can detect a single photons at 20 billion frames per second, scientists have captured a laser traveling through the air for the first time. Over the course of 10 minutes, the researchers recorded 2 million laser pulses generated when photons collided with the air. The technology could be used to inspect corners of the environment, display objects that cannot be seen on a screen, and also be used where information about time needs to be accurately measured.
"This is the first time we've seen what happens to light as it passes by," said lead researcher Garry Pee of the University of Heriot-Watt in Scotland. In general, scientists can only see light through reflections on objects. Trying to see the laser light emitted by a laser is even trickier because the photons are moving in a focused beam and all in the same direction.
References: