new laser diode ucsb

The group of researchers from University California, located in the group of researchers from University California, located in city Santa- Barbara (University of california-Santa barbara, UCSB), created new type blue-violet laser diode. As it is asserted, new product will be able to replace the analogous instruments, utilized now in the optical disk of new generation.

Let us recall, for the discoveries in the field of light-emitting diodes, including for the creation of blue laser, Nakamura was obtained in the past year the prize of millenium (Millennium Of technology prize) - the reward, made level to the Nobel Prize, and which has the largest in the world prize fund. For the first time the prize of millenium was entrusted by two for years previously inventor of the Internet to Tim berners-Lee.

In the new laser diode for the first time is used nonpolar semiconductor on the basis of nitride gallium (GaN). The models, obtained in UCSB, demonstrated the speed threshold current not above 7,5 kA/sq. cm, distinct localization in the distant zone and the generation of coherent optical radiation with the wavelength 405 nm in the pulsed operation. Use of a nonpolar GaN- semiconductor of according to scientific, gives the possibility to decrease threshold current in comparison with the commercial accessible instruments, which corresponds to the decrease of energy consumption and to the prolongation of the period of the service of laser diodes.

new product can find numerous commercial applications, including the optical systems drive with high speed, optical sensors and medical instruments. Since the blue-violet diodes emit the waves of smaller length, they ensure the high speed of data on the optical disk, than their red predecessors, utilized in CD and DVD.

new laser diode UCSB

NEW LASER DIODE UCSB