Company Filing History:
Years Active: 1985-1986
Title: Masakazu Morishita: Innovator in Semiconductor Laser Technology
Introduction
Masakazu Morishita is a prominent inventor based in Miyagi, Japan. He has made significant contributions to the field of semiconductor laser technology, holding 2 patents that showcase his innovative approach to optical integrated circuits.
Latest Patents
Morishita's latest patents include an optical integrated circuit that features a semiconductor laser designed for integration into circuits. This laser device is characterized by a short resonator dimension, which restricts power consumption to about 1 mW or less. The innovation is achieved by enhancing optical confinement, carrier confinement, and the reflectivity of the end faces within the lasing cavity. The design incorporates double-layered mirrors formed at both ends of the resonator by depositing a dielectric insulating material and covering it with a metal layer.
Another notable patent is the three-terminal semiconductor laser. This device consists of an anode region made of a highly doped first conductivity type, an active layer adjacent to the anode, and a channel region made of a high-resistivity material. The cathode region, located at one end of the channel, is also highly doped. The gate region surrounds part of the channel and is made of a highly doped region of the first conductivity type. Notably, both the anode and channel regions have a wider band gap than the active layer.
Career Highlights
Throughout his career, Morishita has worked with notable organizations, including Handotai Kenkyo Shinkokai and Handotal Kenkyu Shinkokai. His work has significantly advanced the understanding and application of semiconductor lasers in various technologies.
Collaborations
Morishita has collaborated with esteemed colleagues such as Tadahiro Ohmi and Junichi Nishizawa. These partnerships have contributed to the development of innovative solutions in the field of semiconductor technology.
Conclusion
Masakazu Morishita's contributions to semiconductor laser technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence advancements in optical integrated circuits and semiconductor devices.