Discuss the use of Lasers in Compact Disk Players for audio (CD) and Essay

Discuss the use of Lasers in Compact Disk Players for audio (CD) and computer applications (DVD) - Essay Example Ways of storing data is not the only thing that has improved over the years but also means of ensuring that information reaches the destination safely has improved from data taking days to be delivered to today where it can only take seconds to send and receive the same. Various digital methods have been improved with earliest development of laser optical being seen in the 70’s where they used light to capture any activity that took place on the surfaces of the compact disks. The laser could only capture the audio parts, but with various improvements, the compact discs can clearly capture the video segment and duplicate them in various copies. Technology is still expanding and being developed and so are the compact disks that it will come a time that most of the things we are using right will all be operating on digital basis. Principles of Operation of These Systems The laser light has the ability to be pure and coherent which makes it well suited for complicated applications for devices such as compact disc (CD) players (Rafiquzzaman, 2005). The light is focused with tremendous accuracy, which allows it to perceive the infinitesimal pits that appear at the surface of a music CD. Then there are the electronic circuits that single out the torrent of dark and bright patterns that the light identifies then decodes them into high quality music. CDs and DVDs are optical are visual storage mediums that have digital data recorded on top of them (Rushbrook & Roderick, 2002). These two devices uses compact disc player devises that are capable of reading the recorded data using optical beams, which accurately duplicates the original data such as pictures and music. There is a detector that is also referred to photodiode that receives rapid light waves being reflected on top of the CD. The photodiode is very sensitive to the laser light which makes it extremely significant in altering it to electric signals and other important signals used by digital devices. The compact disc player is created in a way that it reads the information by optical means making the tearing and wearing of the discs almost impossible. The technology that has been used for decades with CDs and DVDs is practically the same with only very minimal changes being made to the same (Clements, 1994). Whether the discs have been designed for video, audio or computer applications the basic operations are essentially the same. The laser operations work the same with all the compact devises that are required to store digital information for a period of time. Compared to the light from the bulbs, the laser lights contained a single pure color and all the lights effects are in sync which allows it to move in precise beams that do not extend out. These properties have been important for compact discs since the music information is divided into tracks of about one thousandth of a millimeter thick. This requires lens that focuses the laser light to a miniature spot that can locate th ese tracks (Rushbrook & Roderick, 2002). Their Historical Development The first video disc player to be made was manufactured in 1970 which actually used laser to pick information. The disc worked like today CDs by picking encoded information on the surface of a revolving optical disc and turning it into important information such as music (Clements, 1994). There were two main gases that were very important for laser disc player, this includes neon and