ELECTRONICS/COMPUTER HARDWARE/COMMUNICATIONS |
Monolithic Array of Laser Diodes Expand Laser Applications Since the invention of the first optical laser in 1960 and the subsequent development of low-cost lasers for widespread applications by the 1980s, the potential of laser technology has sparked an intense pursuit of higher powered laser diodes. Applications as diverse as supermarket bar code scanners and photodynamic cancer therapies have spurred the search for better technology. Funding was not available to advance laser research, because it was too high risk and long term for investors. In 1991, SDL, Inc., in cooperation with Xerox Corporation and Stanford University, submitted a proposal to the Advanced Technology Program (ATP) to expand the laser applications base by developing a monolithic array of laser diodes that could be individually activated and emit light at predetermined wavelengths ranging from infrared to blue. With the ATP award, the research team successfully developed high-performance, multibeam red laser diodes; two alternative methods for monolithic integrations of red, infrared, and blue emitters; and several valuable intermediary technologies. From these successes, the ATP-funded project built a strong U.S. technology base for multiple laser applications. Eighty-four inventions have been commercialized into numerous products. SDL (currently a part of JDS Uniphase) sells laser products for several markets, including high-speed color reprographics, optical data storage, displays, medical therapy, and telecommunications. Xerox used these technologies to enable a new generation of high-performance, high-speed printers and multifunction office product systems that are on the market today. These products enable companies to fulfill their printing requirements, such as one-to-one marketing and on-demand book printing, in minutes instead of days.
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Research and data for Status Report 91-01-0176 were collected during October - December 2001 and June 2003. |