But they cannot use laser-disc players to watch movies on SD.

CNN: ASIANOW - Asiaweek

Nine consumer electronics firm agreed in February to standardize and promote a new format called "Blu-ray Disc" that uses a shortwave blue-violet laser to read more than two hours of high-definition content stored on a DVD-size platter.

FORBES: What's Coming

Such heterostructures are widely employed to make the lasers in compact-disc players and retailers' laser scanners.

ECONOMIST: Microelectronics