Location History:
- Amagasaki, JA (1976)
- Moris, JP (1980)
Company Filing History:
Years Active: 1976-1980
Title: Innovations by Hirofumi Kan: A Pioneer in Semiconductor Laser Technology
Introduction
Hirofumi Kan, a notable inventor based in Amagasaki, Japan, has made significant contributions to the field of semiconductor laser technology. With two patents to his name, his work reflects an ongoing dedication to advancing the capabilities of laser devices.
Latest Patents
Hirofumi Kan's latest patents focus on sophisticated semiconductor laser devices. One patent details a semiconductor laser device that comprises N type GaAlAs, GaAs, and GaAlAs layers, which are successively grown on a semi-insulating GaAs substrate doped with chromium. In this innovation, zinc is diffused into specific areas of those layers to a depth that reaches the substrate, forming pn junctions. These junctions are crucial as they convert regions of the original n-type layers into p-type conductivity, enabling the GaAs layer to serve as a light-emitting region.
The second patent outlines a process for producing this advanced semiconductor laser device, wherein layers of N type Ga0.7Al0.3As, N type GaAs, and P type Ga1-0.3Al0.3As are epitaxially grown on an N type GaAs substrate sequentially. This innovative process includes selectively etching portions of the layers and then epitaxially growing P type Ga1-0.3Al0.3As that is highly doped with zinc, filling the removed portions and forming a radiative recombination region.
Career Highlights
Hirofumi Kan is associated with Mitsubishi Denki Kabushiki Kaisha, a prominent company known for its advancements in technology and electronics. Throughout his career, Kan has focused on innovations that enhance the performance of semiconductor devices.
Collaborations
During his professional journey, Kan has collaborated with notable colleagues such as Hirofumi Namizaki and Wataru Susaki. Their teamwork has undoubtedly contributed to the development and refinement of groundbreaking technologies in the semiconductor field.
Conclusion
Hirofumi Kan's contributions to semiconductor laser technology demonstrate his innovative spirit and impact on the industry. His patents not only reflect his expertise but also pave the way for continued advancements in laser devices, showcasing the crucial role inventors play in technological progress.