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Years Active: 2003-2004
Title: Nobuhiko Sarukura: Innovator in Semiconductor Technology
Introduction
Nobuhiko Sarukura is a prominent inventor based in Okazaki, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of light-emitting diodes and holography. With a total of 2 patents, his work has advanced the understanding and application of these technologies.
Latest Patents
Sarukura's latest patents include a light-emitting diode and laser diode featuring an n-type ZnO layer and a p-type semiconductor laser. This innovative ultraviolet-light-emitting semiconductor diode comprises an n-type ZnO layer with luminous characteristics formed on a transparent substrate. The p-type semiconductor layer is selected from materials such as SrCuO, CuAlO, and CuGaO, which together create a p-n junction. The transparent substrate is ideally a single crystal substrate with an atomically flat yttria-stabilized zirconia (YSZ) surface. The n-type ZnO layer can be formed at temperatures ranging from 200 to 1200°C, and the crystallization of the ZnO layer can be promoted through ultraviolet light irradiation.
Another notable patent involves a method and apparatus for producing holograms using a two-beam laser interference exposure process. This method utilizes a femtosecond laser with a pulse width of 900-10 femtoseconds and a peak output of 1 GW or more. The process includes dividing the pulse beam from the laser into two, controlling the beams temporally and spatially, and converging them on a substrate to record a hologram at an energy density of 100 GW/cm or more.
Career Highlights
Throughout his career, Sarukura has worked with esteemed organizations such as the Japan Science and Technology Corporation and the Japan Science and Technology Agency. His contributions to these institutions have furthered research and development in semiconductor technologies.
Collaborations
Sarukura has collaborated with notable colleagues, including Hideo Hosono and Kenichi Kawamura. These partnerships have enriched his research and expanded the impact of his inventions.
Conclusion
Nobuhiko Sarukura's innovative work in semiconductor technology and holography has established him as a key figure in the field. His patents reflect a commitment to advancing technology and enhancing our understanding of light-emitting devices.