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The article discusses the development of solid-state lasers able to produce green light. The ability of semiconductors to generate laser light only in the red and blue parts of the spectrum as of early 2009 is mentioned, noting that new techniques for growing laser diodes could result in the development of laser-based video displays due to the addition of light from the green portion of the spectrum. INSETS: WHAT ABOUT GREEN LASER POINTERS?;THE GREEN GAP PROBLEM;HOW SEMICONDUCTOR LASERS WORK;A NEW FOUNDATION

The article reports on the study on the characteristics of the blue-violet gallium nitride(GaN)-based laser diodes developed on nonpolar crystal planes. The initiative aims to measure the performance of the systems compared to the conventional GaN-based laser diodes. Information regarding the piezoelectric polarization of the technology within the heterostructure is further discussed.

Evaluates the blue-violet-output semiconductor laser by Nichia Chemical Industries and the tunable-output spectroscopic platform based on an external-cavity laser diode configuration. Performance of the laser; Maximum output of the laser; Incorporation of a Nichia blue-violet laser to TuiOptics laser products.

This year, TIME asked public figures to reflect on what they're thankful for. Shuji Nakamura wrote about energy-saving LED lighting. [ABSTRACT FROM PUBLISHER]

The article focuses on Shuji Nakamura, researcher who helped develop the LEDs, which power high-definition DVD. Nakamura came from Japanese industry's equivalent of left field. He delivered a technology that had stumped researchers in some of its best electronics labs. Gallium nitride is the material upon which Nakamura's technology was based. This is a material which is rarely used by researchers at that time. A shift was started by his success to the material from the traditional selenide. Nakamura continues to study gallium nitride crystal structures as a professor at the University of California, Santa Barbara.