The future is looking blue

Article Abstract:

The use of a blue laser diode to improve the storage capacity of compact discs (CD), an innovation in CD technology pioneered by Nichia Chemical Industries, is currently being pursued by a group of Japanese companies, headed by Toshiba and Matsushita. The new digital video disks, which are now being produced for commercial distribution, can accommodate 4.7 gigabytes per side. Such capacity is 12 times as much as the ordinary CD which uses near-infrared diodes.

Innovations, Toshiba Corp., Product information, Digital video disk, DVDs (Digital videodisks), Product enhancement, Video recording industry, Compact disc industry, Compact disk industry, Lasers, Nichia Chemical Industries, Videodisc industry, Diodes, Laser, Matsushita Audio Video Sdn. Bhd.

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Do the twist to get fit

Article Abstract:

The optoelectronics industry has found difficulties in growing defect-free material without lattic matching. However Ejeckam and colleagues have developed a universal substrate that does not require lattic matching, using a twist boundary which is created by the rotation of thin film before fusing it to the substrate. Dislocations are contained so that they do not intrude on the light emitting properties of the material.

Product development, Lattice dynamics, Optoelectronics

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The Vs and Qs of optical microcavities

Article Abstract:

Periodic structures that manipulate light are known as photonic bandgap materials or photonic crystals, and are expected to be important in the development of optical devices. Foresi and colleagues have reported the most spatially localized photon mode, obtained using the photonic bandgap approach. The work expands on the evidence that photonic crystals act as they are supposed to.

Research, Observations, Photons, Photonics

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