This inventor holds 2 USPTO granted patents. Top assignee: Fujitsu Corporation. Active years: 1993-1995.
Company Filing History:
Years Active: 1993-1995
Title: Innovations of Hirohide Kurakake
Introduction
Hirohide Kurakake is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of semiconductor technology, holding 2 patents that showcase his expertise and innovative spirit. His work primarily focuses on semiconductor lasers and laser amplifiers, which are crucial for various optical applications.
Latest Patents
One of his latest patents is for a semiconductor laser that utilizes a group III-V compound semiconductor. This laser operates in the 1 µm band and boasts excellent conversion efficiency and a high characteristic temperature. It is capable of emitting light in both the 1.3 µm and 1.55 µm bands. The laser structure includes an active layer for light emission, guide layers with a larger band gap than the active layer, and clad layers that embrace the guide layers. The lattice constants of these layers are precisely engineered to optimize performance.
Another significant patent is for a laser amplifier designed to amplify optical waves without saturation. This device features an active layer with a uniform width and thickness, which facilitates stimulated emission of photons as an optical beam passes through. The design includes an optical wave guide layer, clad layers, and anti-reflection coatings to enhance efficiency and performance.
Career Highlights
Hirohide Kurakake is currently employed at Fujitsu Corporation, where he continues to innovate and develop advanced technologies. His work at Fujitsu has allowed him to contribute to cutting-edge research and development in the semiconductor field.
Collaborations
Throughout his career, Kurakake has collaborated with esteemed colleagues such as Susumu Yamazaki and Chikashi Anayama. These partnerships have fostered a creative environment that encourages the exchange of ideas and advancements in technology.
Conclusion
Hirohide Kurakake's contributions to semiconductor technology through his patents and work at Fujitsu Corporation highlight his role as a leading inventor in the field. His innovative designs in semiconductor lasers and amplifiers continue to influence the industry and pave the way for future advancements.