Blue laser diodes fired next month

Blue laser diodes fired next month
Steve Bush Commercial sample blue laser diodes will be available from next month, according to Japanese semiconductor company Nichia. The shorter wavelength of blue and violet laser diodes promises to bring about optical storage devices with higher data densities. “Blue lasers are still under development, a commercial sample would be available early next month,” said Nichia’s Gaku Ueyama. Blue laser diodes have until now proved extremely difficult to make. Lifetimes in experimental devices are frequently only a few hours, and often less than a second. Nichia has been leading the pack in their development, spearheaded by chief researcher Shuji Nakamura. Last year, before any other company had achieved diodes with lifetimes of only a few seconds, Nakamura astonished competitors by lecturing using a blue laser pointer. This spring Nichia announced a 300-hour operation blue laser diode after Fujitsu claimed to have made a device lasting five hours. US firms Cree and Hewlett-Packard are playing catch-up although neither has announced device lifetimes of more than one second. “Our aim is to be number one in green, blue and ultra-violet lasers,” said Waguih Ishak, head of blue laser research at HP earlier this year.


Leave a Reply

Your email address will not be published. Required fields are marked *

*