Blue laser




The term blue laser is frequently applied to semiconductor UV lasers which had not been available before and opened the way for applications such as high-density HD DVD data storage and Blu-ray discs. The shorter wavelength allows it to read discs containing much more information. Blue lasers usually operate at 405 nanometers but in general the operation of these devices was demonstrated between 360 and 480 nm.

Products

DPSS lasers

A blue BBO crystals are used as frequency doublers. For lower optical powers, KTP or periodically poled KTP (PPKTP) crystals are used.

Further reading

  • Shuji Nakamura, Gerhard Fasol, Stephen J. Pearton, The Blue Laser Diode : The Complete Story, Springer; 2nd edition, October 2, 2000, (ISBN 3-540-66505-6)
 
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