Origin of Customized Blue Laser Diodes
Sylwester Porowski, at the Institute of High Pressure Physics at the Polish Academy of Sciences in Warsaw (Poland), developed technology to create gallium nitride mono-crystals with high structural quality using magnesium doping to create fewer than 100 defects/cm 2. The story of GaN-lasers started in 1995 with first demonstration of laser operation in the near UV. Blue lasers can be produced by: Lasers emitting wavelengths below 445 nm appear violet, but are nonetheless also called blue lasers. Violet light's 405 nm short wavelength, on the visible spectrum, causes fluorescence in some chemicals, like radiation in the ultraviolet ("black light") spectrum. Blue-violet-laser diodes are about to burst onto the consumer electronics market in a technology called Blu-ray, which exploits the short wavelength of blue light to record up to 27 gigabits or 13 hours of standard video on a single DVD. InGaN) and emitting around 400–480 nm, have been developed quite successfully, now offering substantially better output powers and device lifetimes than green diode lasers. Shuji Nakamura Stephen Pear ton Gerhard Fasol The Blue Laser Diode The Complete Story Second Updated and Extended Edition With 256 Figures and 61 Tables Springer fContents 1.
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