Company Filing History:
Years Active: 1993-1995
Title: Innovations by Kaoru Kusunoki in Semiconductor Laser Technology
Introduction
Kaoru Kusunoki, an esteemed inventor based in Kyoto, Japan, has made significant contributions to the field of semiconductor laser technology. With a total of two patents to his name, his innovations have the potential to enhance various applications in optical information recording and reproducing systems.
Latest Patents
Kusunoki's latest patents focus on advancements in semiconductor lasers. The first patent, titled "Semiconductor laser and manufacturing method therefor," describes a semiconductor laser that is adaptable for a 3-beam method. This invention includes a semiconductor laser chip bonded on a primary plane of a flat submount, with a chip thickness ranging from 30 to 80 micrometers. The manufacturing method involves sequentially stacking layers of compound semiconductor materials on a semiconductor substrate to create a semiconductor laser wafer. The process further includes mechanically abrading the semiconductor substrate, subjecting it to a chemical treatment, forming an electrode film, and cutting the wafer into chips before bonding each to a submount.
The second patent, named "Semiconductor laser device," details a semiconductor laser device consisting of an active layer, a lower clad layer, and an upper clad layer, along with a current blocking layer. This arrangement limits the active region of the laser, which is designed to reduce coherence of the oscillated laser beam. This feature aims to decrease feedback-induced noise when employed in optical information recording and reproducing apparatus.
Career Highlights
Kaoru Kusunoki is currently affiliated with Rohm Co., Ltd., a prominent company in the semiconductor industry. His expertise in semiconductor lasers has been instrumental in driving forward the company's innovative efforts in this field. Kusunoki's patents not only reflect his ingenuity but also highlight his commitment to advancing technology that could lead to improved optical devices.
Collaborations
Throughout his career, Kusunoki has worked alongside talented professionals such as Masato Mushiage and Satoshi Uchida. This collaboration has provided an environment conducive to innovative thought and groundbreaking advancements in semiconductor technology.
Conclusion
Kaoru Kusunoki's work in semiconductor lasers exemplifies the spirit of innovation that drives technological advancements in today’s world. His patents pave the way for new solutions in optical information systems, showcasing the importance of dedicated inventors in the ongoing progression of technology. With continued collaboration and research, Kusunoki's contributions may lead to further breakthroughs in semiconductor applications.