blue laser

[¦blü ¦lā·zər]

(optics)

A laser that emits bluish-purple light efficiently at room temperature from a semiconductor diode based on multiple quantum wells of III-V nitrides such as indium gallium nitride.

blue laser

A semiconductor laser that emits light in the 400-450 nm range. Although it was very difficult developing blue lasers, which emit smaller wavelengths than other colors, blue lasers became commercially available in 2001. Blue diode lasers allow for smaller pits to be used in optical discs (CD-ROMs use 780 nm pits; DVDs are 630 nm).

Blue light-emitting diodes (LEDs), a related technology, were also difficult to manufacture, but became practical and widely used after the turn of the century. See Blu-ray and UDO.

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References in periodicals archive ?

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London, August 26 (ANI): The US Defense Advanced Research Projects Agency (DARPA) is turning to blue lasers to establish contact with submarines, as they penetrate water more effectively.

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Blue laser optical is just now entering the market, meaning it's time to prepare to migrate from DVD to Blue Laser optical.

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UDO is also the only blue laser optical technology to receive international standard certification from both Ecma and ISO.

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A global consortium trying to establish Blu-ray blue laser technology as the standard for next-generation DVDs has set specifications for read-only discs, and compatible DVD players would hit the market as early as the second half of 2005.

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Polish Holographic Systems has developed a blue laser diode, compact, portable DOVID mastering system with up to 6000 dpi resolution.

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Blue laser light with a wavelength of 399 nanometers is emitted from the upper surface when light strikes the bottom of the chip.