mr soft
21st June 2013, 20:02
Storing data on conventional DVDs and Blu-Ray disk involves a single laser that burns a mark into the disk’s surfacing, changing its chemistry. The mark represents a 1 or 0, which is the basic binary language of all computer data. But because the marks can’t be smaller than a half the wavelength of the laser beam, there is a limit, to how many marks can be burned into the surface of a disk.
The Swinburne team, led by optoelectronics professor Min Gu, did something different. They used two lasers instead of one.
Source:
http://news.discovery.com/tech/gear-and-gadgets/how-1000-terabytes-onto-dvd-130620.htm
The Swinburne team, led by optoelectronics professor Min Gu, did something different. They used two lasers instead of one.
Source:
http://news.discovery.com/tech/gear-and-gadgets/how-1000-terabytes-onto-dvd-130620.htm