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Fujitsu, Mitsui form quantum dot lasers JV

Posted: 24 Apr 2006 ?? ?Print Version ?Bookmark and Share

Keywords:John Walko? Fujitsu? Mitsui?

Japanese groups Fujitsu and Mitsui have formed a joint venture, dubbed QD Laser Inc., to develop and make quantum dot lasers.

According to the press release, financing has come from the venture capital arms of both conglomerates, and the venture will build on quantum dot laser research carried out by Fujitsu and the University of Tokyo. It will have starting capital of just over $300 million.

The companies say they will invest in the venture in increments, with Mitsui initially taking a 61 percent stake in the venture and Fujitsu with 39 percent through their respective venture funds.

Quantum dot lasers produce a more stable output than conventional semiconductor lasers because they are much less affected by temperature variations. As a result, they produce fewer errors when used for data communications or in optical disk drives.

This guaranteed stability enables them to squeeze more bandwidth out of existing optical fibre lines, or to store more data on optical disk drives. The lasers also waste less energy, and have lower power consumption.

Next-generation blue laser technology, such as that employed in the Blu-ray optical disk used in Sony's forthcoming PlayStation 3 games console, is based on early quantum dot research. The devices are also expected to play a key role as light sources for future optical communications equipment.

- John Walko
EE Times




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