The development of laser application science related to daily life

The emergence of 　　laser has led to the development of many disciplines, such as quantum optics, quantum electronics, laser spectroscopy, nonlinear optics, integrated optics, ocean optics and so on. Here we only list some of the developments of laser application science related to daily life, which are more commonly used in the machinery industry.

　　(1) Laser disc manufacturing technology

　　 In 1877, the world's first phonograph was born in the hands of Edison! This is the beginning of the development of audio and video technology. People dissatisfied with players, 40. At the beginning of the 20th century, Germany was developed with high-frequency partial magnetic fields and good mechanical transmission performance of recorders, opening up new channels for recording. By 1955, the American Radio Corporation announced the color recorder, capable of recording the image of oneself and nature.

　　 opens a new page in the history of audio-visual technology, opens the door and the path to the development of modern audio-visual technology. Three years later, the American Anpike company produced commercial color video recorders. In 1970, British Taiwan Card Company developed the first black-and-white TV video disc. Two years later, Philip, the Netherlands, developed a laser sensor for color TV pictures. This is the birth of modern laser discs!

The birth of 　　 laser discs, the application of lasers in audio equipment, is a revolutionary sound. People use laser 'light' instead of needles, needles made of stones, and CDs. Laser recording can not only record, but also record. Laser recording is used to record and store images and sounds. It can be said that this is a revolutionary audio-visual technology and a great pioneering work.

　　 Since the laser disc, people have fully tapped their potential to create multifunctional laser phonographs and records. In 1983, the United States and Japan were newly developed digital recordings. This record is completely free from the traditional production record and playback mode, and the record opens up a new field. Such digital records and storage technologies have important uses.

　　The development of laser disc technology is very fast, and players with new records for various functions and various purposes are constantly appearing. Therefore, laser discs, together with electronic computer technology and audio-visual technology, enter the storage and retrieval of literature. The information is stored in a CD, which can be quickly retrieved, consulted, and printed out the required information. Now CD books have entered family life.

　　(2) Vivid pictures

　　 Modern holography, along with laser technology and new developments, provides us with a way to capture all visible scene information, and can get A very realistic three-dimensional display hologram. A proper light, the original scene of light will reappear in front of us. Due to the light wave scene of all the information recorded by the hologram, the reconstructed scene is exactly the same as the original one. A hologram reproduction scene is so lifelike, it makes people feel like they are on the scene. I want to go closer and take a closer look, and I want to reach out and touch it. The hologram is a true stereo.

　　The photos obtained by holography can withstand devastating blows.” Each part of the hologram, no matter how many, can represent the entire original photo, that is to say, the hologram is divided into several pieces, and each piece can be A complete representation of the original scene. If the hologram is broken, torn off, or trapped in a situation, the fragments that destroyed the hologram can also be copied from the waste.