Company Filing History:
Years Active: 1989
Title: Gen-ichi Hatakoshi: Innovator in Semiconductor Laser Technology
Introduction
Gen-ichi Hatakoshi is a notable inventor based in Yokohama, Japan. He is recognized for his contributions to the field of semiconductor laser technology. His innovative work has led to the development of a unique semiconductor laser diode that enhances performance and efficiency.
Latest Patents
Hatakoshi holds a patent for a "Transverse-mode stabilized semiconductor laser diode with slab-coupled." This invention features a semiconductor laser diode that includes two semiconductive cladding layers of different conductivity types, which are stacked on a substrate. An active layer of an undoped semiconductor film is sandwiched between the cladding layers. A channel groove is formed in a current blocking layer and the underlying cladding layer, deep enough to divide the current blocking layer into two parts. A waveguide layer covers the channel groove and the current-blocking layer, providing a slab-coupled waveguide structure for transverse mode oscillation. The second cladding layer, the current-blocking layer, and the waveguide layer are composed of gallium arsenide containing aluminum.
Career Highlights
Hatakoshi is associated with Kabushiki Kaisha Toshiba, a leading company in technology and electronics. His work at Toshiba has significantly contributed to advancements in semiconductor technology. His innovative approach has positioned him as a key figure in the development of laser diodes.
Collaborations
Throughout his career, Hatakoshi has collaborated with talented individuals, including Hiroko Nagasaka and Naohiro Shimada. These collaborations have fostered a creative environment that has led to groundbreaking innovations in the field.
Conclusion
Gen-ichi Hatakoshi's contributions to semiconductor laser technology exemplify the spirit of innovation. His patent for the transverse-mode stabilized semiconductor laser diode showcases his expertise and commitment to advancing technology. His work continues to influence the industry and inspire future inventors.